By Andrew Revering
My original post was intended to just be a question about the upcoming S8's dual-sim possibility... however this thread ended up being the main S8/S8+ thread, so I'm modifying my original post to include some main points that we've gathered about the device and provide some useful resources: Misc FYIs ------------------------------------ All MSLs appear to be 000000 To force band 41 only (thanks Terrell352): ##DATA# MSL 000000 then go to LTE and turn off b25 and b26. ##debug# works on this device (thanks nexgencpu)Cleaner way to look at carriers,CA and signal strength etc.. Want Root permissions? This will trip KNOX and you won't be able to use Samsung Pay or other KNOX features
Galaxy S8 or Galaxy S8+
Carrier/Dual Sim Info ------------------------------------ I have Sprint (obviously), but I have property where the only carrier is AT&T. FreedomPop now has a free AT&T SIM you can buy for limited voice, data & texting, which is perfect for my limited needs when I'm at my cabin. Converting the phone to a Dual-SIM phone then becomes convenient for me with the FreedomPop SIM + Sprint. With that in mind, here is some useful info (including a solution below): See what frequencies/networks your phone supports: https://www.frequencycheck.com/ All networks are shipping the 'U' version which has support for all US networks but are software-locked. Once unlocked they will work on any US network. Dual Sim version not available in US or UK. The International Dual Sim model S8+ is SM-955FD. You can convert your single-sim US model into a dual sim by 1) unlocking and 2) add a $50 dual-sim adapter from magic-sim or simore (I bought the Simore one and it ripped before I could even try it once. They would not refund) If you are within a contract and/or didn't pay full price for your phone and don't want to wait, you can unlock your phone: https://theunlockr.com/unlock-my-phone/ usually for something like $20. Correction: These unlockers don't work for CDMA Sprint phones. You have to either buy an Unlocked phone or get Sprint to unlock it for you. Correction2: There is at least one guy who knows how to do it! See 'Solution' below. You can convert it into a Dual-SIM by adding one of these: http://www.magic-sim.com/ or http://www.simore.com/ (don't recommend simore, mine tore easily) I found a ---> SOLUTION <--
----------------------------- Info from mmark27 Remember only buy stuff that's been approved by Benson Leung, the Google Engineer that tests tons of USB-C items. You can search him on Amazon. USB-C crappy products can fry your phone and start fires. From what I (mmark27) understand, the phones are only Quick Charge 2.0 compliant officially. They may pick up QC 4.0 compliance at some point as the chip supports it, but for now QC2.0 is the safe bet. choetech fast charging pads don't work Seneo fast wireless charger do work micro-female to male USB-C USB-3.0 to USB-C Wireless charging pads that look just like the ones at Best Buy from Samsung Pleson fast charging pads work with S8 and S8+ https://www.amazon.com/dp/B01MRXM473/ref=cm_sw_r_cp_apa_Kv5-ybKG6TSZP
Noteworthy Specs -------------------------------
Only difference between S8 and S8+ is screen size and battery size. Bezel free, all screen design No physical home button 5.8" & 6.2" Plus Version 'Infinity' QHD Amoled Display 12mp f1.7 rear, and 8mp f1.7 front cameras, auto focus Wifi Calling Dual Edge Only Display Bluetooth 5.0 for double speed and four times the range 3000mAH (S8) & 3500mAH (S8+) battery, fast charging 4 GB RAM Waterproof 64 GB built in storage Bixby Artificial Intelligence, dedicated button Iris Scanner Pressure Sensitive "3D" Touch home button Wireless Charging Can see screen with polarized glasses, unlike with LCD screens (HTC 10, etc) Always On Display PC Replacement (DEX) Fingerprint sensor on back DOES have a headphone jack USB Type C MicroSD Expansion HPUE compliant, which means it will extend existing signal range by 30%, including indoors!In my limited experience with the device, HPUE DOES work. Maybe it doesn't help speeds, I don't know -- but in 2 locations (in two different states) where I normally have no signal, I can now make phone calls and transfer data with a weak signal that I never had before.
I'm planning to upgrade to the Galaxy S8 when it's available on April 21st...
I would really like a Dual SIM version and have Sprint as my primary carrier and use a FreedomPop ATT SIM as a 2nd option when I'm up at my land which is only covered by ATT.
After some research, it seems that the Dual SIM version is the 'International Unlocked' version which does not have the capability of CDMA/CDMA2000 for the 3G/1X portion of Sprint coverage. Since LTE is actually a GSM protocol it has the capability of doing Sprint's LTE, but other services may be limited.
Is this correct?
If so, that probably means I just want to buy the Sprint version and get one of those little dual sim adapters you can now get like this one: http://www.magic-sim.com/
Also, in order to use a SIM from a GSM provider, the phone needs to be unlocked, which outside of contract means I'd either have to wait 2 years, or just buy the full-price phone outright, and then get it unlocked.
Then I can use my ATT SIM, but again coverage may be limited because the radios are tuned for Sprint, not ATT. But I think it may be possible for some of their services to work.
... does this understanding sound correct? Is there another way I can go about what I'm trying to accomplish?
UPDATED: --> SOLUTION <--
A new Samsung tablet certified for Sprint (and others) went through the FCC a few days ago..
Category 6 UE
LTE Bands 2-4-5-12-25-26-41
Carrier Aggregation capable for Downlink operations. 2xCA B41
Looks to be one of the bigger flagship tablets (~10" ?) and will be the 11th 2xB41 CA capable device to come to Sprint.
Try to make this as short and simple as possible. I have three devices; 2 of which are on the same plan and the third on a separate plan.
The third device is my tab 4 which is picking up SprintB41 site 310120 just great. I get 3 bars downstairs.
My other two devices; Galaxy Note 4 & Galaxy Note Edge for some reason will not pick up this tower. I have tried PRL updates, Profile updates, restarted the phones and all I can get them to connect to is a ClearwireB41 site.
More background info...all devices have same Sim card as when purchased, tablet stays off 3/4 of the day and my phones are on when I wake up and turn them off at night. No matter where I go inside or out my phones won't connect to the Sprint site.
Anybody have any ideas before I call Sprint trying to figure something out? I'm not sure how long the tablet has been able to connect to this site so I'm not sure what to think of it besides agitated that the tablet of all things is connecting. I posted two photos; one of the tablet connected to the Sprint site; second of the Clear wire site my phones connect to.
Thanks in advance.
I started working on the Raspberry Pi 3b Plus tonight with an Sierra Wireless em7565. This one has all those cool features that I was describing up top. Not bad for ~39 bucks. I was waiting for a few open source firmwares to get through the compilebot6k's toobs; this one is built now. Some use modem manager or openWRT for the router side. This LTE radio is band(s) 2/26/41 capable on the Sprint side. Band 25 did not make the cut, but was on previous Sierra builds. This is a tester radio so there is a slight chance it will appear down the road. It has just about every other LTE band.
This is an example of the debug screen. GMO is nearest so we only get 26 from a far site. No 41 in our zip yet.
The best part is I can plug an MC7455(that would be Modem#2) or another EM7565 in and it can hop over to that or I can direct load balancing. I just wanted to show the EM7565 authenticated below. Another shot of my terrible reception. Here it is out of the armor.
So, we have a stable software image. I will get it built and add some GPS features, then test on band 41 in Myrtle where present. We have one site w 8t8r gear to test 3xCA on, so it might be a minute. I am in 2xCA MM areas through the week. I will see how it likes the Magic box too.
I should have a true GB ethernet router to massacre in the next couple of weeks with software images already set to go. I can embed the radio beyond a USB adapter. It still requires m.2>mPCIe but that is one less failure point and better throughput. This was a great breakthrough in affordable and small solutions for us. I have to go to bed and then work now.
Have a great week everyone.
Thank you so much for bringing light to this! I would have never known about it had you not posted it! You've saved me a lot of money and lowered my bill moving forward! It wasn't an easy process, but well worth it. Unlocking the phones was surprisingly easy. But the small hiccup came with my final bill. When I received it, I thought I was screwed when I saw that the ETF was included. I almost paid for it too, but the frugal in me decided to call Sprint (couldn't hurt, right?). After an hour on the phone with a US supervisor, my account was credited for the full amount of the ETFs. I walked away Scot-free!! Thanks a bunch OP! I'm trying Verizon's throttled unlimited data plan. Excellent reliability in the city, but there are certain key spots where I need my phone that aren't great. I don't know if it's the throttling or the network.
Marcelo Claure, Town Hall Meetings, New Family Share Pack Plan, Unlimited Individual Plan, Discussion ThreadI see more mass upgrades by TMO on 600mhz -- it seems they did an amazing and fast roll out. If I recall folks here thougt TMO wouldn't be able to see much strides for a year plus.
Reason I bring it up is TMO can't have much more free cash than Sprint. Yet can operate fast and lean.
Positive note Sprint has rocked it's upgrades this past year...
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