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Hey Mike—I’ve got a lot of professional experience with this sort of stuff. I’d be happy to help. Feel free to shoot me a PM and we can discuss further!

I posted this in the Nebraska Premier thread last week, but just wanted to share in this thread the progress that T-Mobile has made in filling in the great coverage gap known as Nebraska. Between late last year and this year, they have added 28 new expansion sites filling in the coverage hole, plus 11 Sprint site conversions in eastern Nebraska and far western Iowa. Notably, in the last month n41 coverage was added on over a dozen expansion sites in western Nebraska that were added to the network last year. For comparison, here is the very first map that I created in October of 2022 after we noted expansion sites outside of Sprint conversion in Lincoln and Omaha. It doesn't show any western parts of the state, but just know there was nothing besides roaming coverage and a little B12 coverage leaking down from South Dakota to the west of Valentine, NE.

Thanks for all your contributions to network monitoring and cell spotting the past decade. Can't imagine what it would have been without SignalCheck!!! Robert

As many of you know, SignalCheck is a side hobby for me. I taught myself Java when I began this project over a decade ago and I am still learning. I am far from a professional programmer, but I have figured enough things out along the way to get the app this far. Lately, I have been struggling to find the amount of spare time necessary to keep up with app development and bugfixes, but I am still enthusiastic about pushing SCP forward. If someone with experience in Java and Android app development would like to lend a hand, especially to help eradicate some of the most challenging issues I have been unable to resolve, please message me. Thanks!

Scattered reports over on Reddit that TMO has started deploying a third 10MHz n41 channel in select markets (bringing the BW up to 190MHz). Keep an eye out for it.

On the Florida Atlantic coast this weekend and have watched VZW and T-Mobile. FLL had VZW mmW in Terminal 4. T-Mobile has decent (not perfect) n41 coverage with 100+50 MHz, with 20x20 n25 on top of that. Heading north, n41 switches pretty quickly to 100+80 MHz, with pretty consistent coverage along I-95 and the Turnpike. A-1A coverage is patchier between Stuart and Fort Pierce, so I switched to VZW (which was more consistent there) on part of that drive. VZW has 100+60 MHz n77; coverage is less consistent than n41 but there are a number of areas where VZW clocks 500+ Mbps when T-Mobile is 300-400 Mbps. Some TMo sites do have gig+ backhaul though; I got a 1.1+ Gbps test indoors yesterday in Stuart. I'll report on AT&T and Dish later.

T-Mobile is mentioned in the second to last paragraph. "SpaceX is aiming to launch the cellular Starlink system for T-Mobile customers later this year, first to support text messages. But the company still needs full approval from the FCC to operate the cellular Starlink technology commercially. " FCC Lets SpaceX Expand Testing of Cellular Starlink for Phones

A new SignalCheck beta is rolling out now and should be available on Google Play shortly. It includes some new user-suggested features and several bug fixes. One change that should be noted is that secondary SIM cells are no longer logged by default; there is a new option under the Beta Crew menu to re-enable it if you prefer. I have not been able to get Dual SIM logging to be reliable yet, random entries mix and match the provider details and SIM number. Hoping this at least resolves the issue with inaccurate log entries for the primary SIM. Will continue to work on that.. it remains the final hurdle to open up Dual SIM support for all users.

A SCP beta update is rolling out now.. it includes more adjustments to site note features including saving notes and displaying neighbor notes. If you are seeing odd behavior with notes (especially those of you 'missing' notes that you know should be appearing), please send a diagnostic report soon after you observe this behavior. I have added additional logging that should capture what is going on (it can be seen on the Diagnostic Mode page). A major improvement to the function to clean up duplicate LTE GCIs is included in this release. Instead of deleting all duplicate entries, it will now save the entry that has the highest 'hits' column value, and delete all others. It is not perfect, but should be a huge improvement over deleting all of the entries. Please keep in mind if you have duplicates, this could impact site note display. Duplicate GCI entries are typically a product of quickly-changing PLMNs that the OS does not report in sync with other data, resulting in some information being logged with the wrong PLMN. Similar issues are happening on dual-SIM devices that I have not been able to resolve yet. Keep in mind that dual-SIM functionality is still in testing, and even the new option to disable dual-SIM logging is still buggy. I'm working on it! Thanks for all of the feedback, keep it coming...

As mentioned on the other thread, thanks to Auction 108 my parents' place (Gillespie County, TX) is now up to 80 MHz n41, which can deliver 600+ Mbps outdoors, at least when CA'd (e.g. with 10x10 n25 that's live here). That means indoor FWA with 3/5 bars on an X55 modem is getting 300-400 Mbps download speeds. The drive between Austin and here on US-290 drops to n71 for a few miles, but that's 20x20 with 15x15 B2 and 10x10 B66 so capacity is still fine. Other than those small stretches everything's either 80 MHz (further west) or 100+80 MHz (closer to Austin) n41. Not sure the sites have more than gigabit backhaul, but they don't need more than that to be pretty consistently the fastest. Meanwhile VZW drops from n77 100+40 to LTE-only, and AT&T from n77 80+40 to n5 10x10, once you get a bit outside Austin, which is disappointing given that VZW could light 100+100 n77 if they wanted here, and AT&T of course has 80+40 everywhere.

I'm back in the land that used to be 40 MHz n41. Now getting 80 MHz, which is enough to get 300+ Mbps on FWA (technically not in the geofence) at my parents' place outside town. Could get more, and better uploads, on either newer hardware or outdoors. By way of comparison, AT&T has mmW down Main Street and n5 elsewhere, while VZW is LTE-only here. They had the perfect excuse to add some C-Band for the hordes descending on this area for the eclipse, and...didn't. So I expect T-Mobile to be the only reliable carrier around here unless you're within range of a small cell in town.

So far all my notes have returned!

Shades of Sprint Nextel? T-Mobile to intro 5G PTT service in April

Depends on if you are in the standard Beta group or the Internal Test group. I roll all releases out to both groups simultaneously, but Beta releases get screened/analyzed/reviewed by Google Play first, in the same manner that production releases are. Internal Test releases become available immediately. When they came out with the Internal Test option (which has a limit on number of users), I offered it with the caveat that they're slightly riskier because of the lack of review and let users decide which group to be in.

I love that service has progressed/improved in many, many areas (including the Lexington metro area) to the point where the forums are largely quiet. When service is great, there's not much reason to look forward to upgrades! I guess, because, they've long since been completed! Bittersweet but kinda awesome.

I have workarounds that essentially do this, but it has taken some time to catch every instance in the code where things need to be adjusted, especially with dual SIMs in play. I have been making further improvements in a soon-to-be-released beta. I see this frequently as well on my Pixel 8.. unfortunately, I have yet to come up with a workaround because the OS is still reporting it as a valid connection; at least the timestamp freezes so you have a clue that something is up. I'm still trying to find the best way to handle this. I overhauled the site note editing/saving/querying functions in the aforementioned beta in progress.. "coming soon" Appreciate all of your feedback as always!!

Progress!

Musical Plant

Finally got a rainbow sim after about a year of occassionally trying. N70, n71, and n66 working on byod s24 ultra. Speed around 550Mbps down, 40 up during rush hour: https://imgur.com/a/ENhnSI2

NextWave is complaining about interference from T-Mobile's network again. It's super annoying considering the area where T-Mobile operates a full 150MHz of BRS/EBS shrank significantly in late 2023. In a place as dense as NYC, have two operators with such split holdings of this band doesn't make sense. Interference seems nearly inevitable. Next Wave has only submitted permits for 22 sites so far, they honestly should just sell. https://www.lightreading.com/5g/redzone-nextwave-also-complain-of-interference-from-t-mobile-s-5g

Neighbor notes have been available for a long time.. many years. Sorry if my post wasn't clear, I was saying I made improvements to that feature.. fixed some bugs and overhauled how the app looks for notes that may be recorded under a different PLMN (like T-Mobile/Sprint Keep sites/etc). NR sites can be tricky depending on the provider because some use multiple NCIs per site.. and in my area, T-Mobile has changed a lot of them. For T-Mobile, I have not identified a pattern between old and new NCIs, so until you save a note under a new NCI, it's going to be blank. If you long-press on the "Connected to [LTE|NR]" label, it will send diagnostics immediately. There's no ability to add a comment to that report but you can send a few when you're seeing an issue and then send one with a comment referring to the other reports so I know what I'm looking for.

Fish Dance

Correction: T-Mobile has 100+80 MHz n41 live here. I didn't see it yesterday so either they just turned it on, it's temporary capacity for the eclipse, or maybe something else. But that means that T-Mobile has as much mid-band online here as they do in Austin, though I'm 99.9% sure their sites here only have a gig of backhaul (which is plenty for the area tbh). Also, VZW has B48 on some of their macros here, so a bit better than just AWS-or-less LTE. And AT&T actually *does* have n77 here (standard 80+40 setup), albeit with hit-or-miss coverage so I'm guessing it's only on a couple of sites.

So, I have some corrections to the above on...all four carriers. Dish: has native service AT&T: has n77 80+40 MHz, though it doesn't appear to be on every site VZW: has B48 20+20+20 MHz on some sites, including tall macros T-Mobile: has 100+80 MHz n41; I didn't see the other 100 MHz pop up until today So, T-Mobile went from 40 MHz n41 to 180 MHz as a result of Auction 108, I believe. That's...phenomenal.

Not seeing it on my S24, but the AT&T side of my Dish/Project Genesis Edge+ 2023 is pulling AT&T n77 as of this morning (didn't test yesterday), with 200+ Mbps download speeds outdoors despite being a few miles from the nearest cell site. Maybe someone used the eclipse as an excuse to build out here after all (not VZW, to be clear). Hopefully I'll catch the signal on my S24 as well (swapped in my Boost AT&T SIM to check), I want to see whether they have both 3900-3980 MHz and DoD spectrum online...at which point they'll have the same amount of 5G deployed to T-Mobile (10x10 n5 + 120 MHz C-Band vs. 10x10 n25 + 20x20 n71 + 80 MHz n41), albeit in a config that *should* allow for higher peak speeds. AT&T seems to be aware they have C-Band here, as this location is marked as covered by Internet Air. So...think I'll try setting that up for the family. EDIT 2: T-Mobile actually has 100+80 MHz here, so they've deployed more mid-band than AT&T owns. Still nice to see AT&T turning theirs on.

So, Dish is continuing to build out their network, it seems. Fredericksburg, TX now has n70 strong enough to be usable (100+ Mbps) indoors a few miles outside town, which means that for most of the area they're now the second-fastest network (behind T-Mobile), since neither AT&T nor VZW have C-Band deployed here. I did lose service for a bit earlier this morning, so this coverage may have just come online and is being optimized as a result. But I'll test later with the Edge+ 2023 to see what state things are in.

Small 2.7 MB GPlay Sys update showing here now on S24+ unlocked. Still March 1st date after.

Cruel Summer

N41 coverage expansion likely related to auction 108 new licenses: the northern run from Columbus to Pittsburgh now shows n41 (except between Coshocton and Newcomerstown, around Tappan Lake, and Hopedale) on the T-Mobile coverage map. The northern run is 161, 37, 16, US 36, US 250, US 22 and is 2/3 divided highway. It is a more picturesque alternate to I-70 and I-79. If true, this would be a big change. I did not see this a month ago. Even if just a plan, it is still good news for Home Internet in new rural areas.

Thank you Robert, that means a lot -- especially coming from you. I appreciate everything you have done to host this site, notably allowing me to make it the de facto discussion forum for SCP. Thank YOU! To be clear, I am not ending my efforts or looking to hand the app off.. just figured a user with more skills than me might be interested in lending a hand with some of the issues I haven't succeeding in resolving. It's more fun to add new features, but I find myself spending more and more time chasing bugs instead of doing cool stuff!

I just got back home and got today's update and my notes fine.

The One UI 6.1 update is out.

The March Play System Update that PythonFan referred to in the S24 thread is also out for S22

Mapped a bit of Perth Amboy since it seemed undermapped on Cellmapper. There are no Sprint conversions in the city however I did map a new build and one older site that had never been mapped before. The part that stood out to me while mapping the city is T-Mobile's site density in comparison to AT&T specifically since those are the two networks that I map. T-Mobile has 10 sites within city limits in comparison to AT&T's 4 sites. AT&T still performs great there thanks to their combo of C-band and DoD spectrum. I got max speeds of about 650Mbps right under a site but those speeds quickly drop off the farther you go from the site. In some parts of the city I couldn't get any more than ~40Mbps on AT&T because I was at the edge of the C-band cell and I'm certain most of the throughput was coming from the lowband I was aggregating with. T-Mobile on the other hand couldn't get the peak speeds that AT&T had because of NextWave encumbering them. They only have 40+40 n41 but had much more consistent 300-400Mbps speeds virtually everywhere I went and a much stronger signal. The only area where they struggled in terms of speed was around Five Corners where T-Mobile has a site on top of the Perth Amboy National Bank Building but it hasn't been upgraded just yet. They only have n71 and n25 on that site. I got speeds of about 150-200Mbps under that site which isn't bad but it's also the busiest area of the city so they definitely could use the capacity.

NP. FYI, No sign of beta yet. Being in beta instead of alpha is no problem. Perhaps betas only get it once all alphas have been updated. Edit just got beta a few minutes ago.

Following up on this. I just went up to City Island and it looks like T-Mobile is giving them the Broad Channel treatment by adding a bunch of small cells throughout the island. I mapped three new ones today bringing them to a total of seven small cells. It's still not a replacement for actual macros though. They need to join Verizon and AT&T in adding at least one more site closer to the north end of the island. Also snapped a pic of the upgraded site: — — — — — I mapped a recently upgraded site in Cobble Hill earlier and noticed that the gNB IDs for n41 and n25/71 are separated by two. Maybe it's a sneak peak into the numbering scheme going forward? gNB ID 1089448 is n41 and 1089450 is n25/71. Maybe n66 or n77 will be given 1089449.

With that change... first time I've cracked Gig+ in Omaha. Granted it was before 6am, but still...

They just expanded the primary n41 carrier here in Omaha! Up until sometime this morning we were at 80+40n41. This afternoon we are 100+40! A relatively small change but nice to see nonetheless.

Just got back from Boston where they now have 180MHz of n41 deployed. I was floored by the network there. It's funny reading my previous posts about Boston in comparison to now because it's a night and day difference. Speeds there are insane and I'd go as far as saying a somewhere between a third and half of all of the upgraded sites have multi-gig backhaul. One thing I noticed was that upload speeds seem to be slower than what I typically see here in NYC with the exception of small cells. Not certain why that's the case. There are still a decent number of sites that haven't been upgraded yet thanks to Boston's weird laws about concealing macros on buildings but speeds were still fantastic everywhere I went. On top of that they have a million midband small cells deployed for added capacity that are easily capable of speeds over 1Gbps on 5G and >300Mbps on LTE. I'd encounter them Downtown, Back Bay, South Boston, Dorchester, etc. Just non-stop n41 small cells. — — — — — Also had a Verizon and AT&T line for testing. For whatever reason, my phone struggled to connect to C-band on AT&T in Boston but it's not as if there is much C-band available. Instead my phone seemed to prefer n5 in most areas. On sites where C-band is installed, they also install DoD spectrum unlike in NYC. Speeds are great when I connected, usually around 500Mbps. Boston is an Ericsson market for AT&T and on upgraded small cells you'll often find little Ericsson mmWave antennas installed. The phone I use to test AT&T doesn't have mmWave so I couldn't determine how well it performed but on LTE I'd see speeds upward of 150Mbps. — — — — — Verizon has a lot of mmWave deployed in Boston in tons of neighborhoods. I didn't take any photos but they typically just look like 3 Samsung mmWave antennas attached to the top of a pole. Speeds are great with me getting 2-3Gbps when I connected. There is also plenty C-band which got me speeds up to 900Mbps but average in the 500-600Mbps range. One thing I noticed about Verizon here is that they haven't enabled ENDC on their older small cells which leads to some issues where if you're connected to LTE on an old small cell, you're phone will flat out refuse to connect to 5G. What I'd often do is cycle airplane mode which would force my phone to scan for 5G and connect to that first. However if your phone is idle, it'll drop back down to LTE and get stuck on that small cell. — — — — — Last point, there is a DAS in the Prudential Center that I tested on my last day in Boston. AT&T had ENDC enabled so I was able to connect to n5 from outside the mall and aggregate with Band 2 inside the mall for speeds of about 80Mbps. Verizon had LTE pulling speeds of about 150Mbps but because there is no ENDC enabled, my phone wouldn't connect to 5G at all. T-Mobile on the other hand got speeds up to 1.1Gbps on 5G and when I tested on LTE, I saw speeds above 200Mbps. — — — — — Edit: I counted about 36 n41 small cells that I connected to in my 3 days there.

Medical Chart

New AT&T speed record for me. I encountered an AT&T site with upgraded backhaul in Crown Heights. I'm certain I can hit 1Gbps on this site off-peak.

Shrimp Avocado salad

https://www.fcc.gov/ecfs/document/1030712968789/1 Very rosey reports from SpaceX of satellite to phone performance stating ingredients it even worked inside. Note the testing was done at low altitudes. Operates on band 25 g block as was noted in the past. Number of satellites will be key, as well as how use is limited, since satellite capacity is finite. Credit: https://www.reddit.com/r/tmobile/s/MrnobMcnMR

Not sure if this is similar for anyone else but since they expanded the second n41 carrier, if I bandlock to n41 SA only then my phone will often camp on the second carrier. This makes it possible to map for the first time.

The second n41 block in the metro Seattle area was expanded from 40MHz to 80MHz giving a total n41 bandwidth of 180MHz.

T-Mobile eyes auction for 800 MHz spectrum that Dish can’t buy https://www.fiercewireless.com/wireless/t-mobile-eyes-auction-800-mhz-spectrum-dish-cant-buy

From Big Cities to Small Towns and Places In Between, T-Mobile Customers are Getting a Massive 5G Boost Not wasting any time exploiting the Auction 108 winnings.

B26 is data only on two sites here in Ohio. Calls will hangup on first ring.