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Found 8 results

  1. Samsung Galaxy S8 & Dual Sim/Duos

    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 <-- Charging/Cables ----------------------------- 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. ============================ORIGINAL POST===================================== 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 <--
  2. I'm here looking for answers to a simple question. Where is this mystery Sprint signal coming from? For the past few weeks I've received a signal on multiple Sprint devices, two Sprint devices with roaming turned off, and two Virgin Mobile phones and Virgin Mobile phones can't roam, the other rate plans might be able but I'm talk about Virgin Mobile devices from before they introduced all those other plans. What I'm making clear is these devices have to be picking up a Sprint signal, plus I've downloaded the SignalCheck Pro app which has indicated two different signals 1XRTT and 1X800. The signal only last for about 8 hours each morning and begins coming in and out towards the end of each morning. I try making a call and it fails, and it doesn't get any data at all. I try each device and they all do the same thing they have a signal and very strong signal with no data, and voice doesn't go threw, I haven't tried sending a text figured no data, no voice then there must be no text. I read about some "projects" that Sprint has going on Project Ocean and Project Cedar. Since Project Ocean is suppose to be taking place in Missouri and I live so close to the Iowa, Missouri line, I figured if there is a tower going up maybe it is possible I'm getting a signal from it, in the early stages. I really don't know what is going on, if Sprint is launching service, putting up new towers and that signal finally comes, and stays, and works. I'll be back full time on the Sprint ban wagon. Unfortunately, I live in an area not served by (according to experience and coverage map) Verizon, AT&T, T-Mobile and Sprint. Not even the two Iowa carriers i Wireless or Chat Mobility serve my area, go 10, 15 or 20 miles in any direction your good, here, wireless dead zone, no choice of carriers. And if Sprint puts a tower here if I finally get an answer and learn that signal will soon come and stay and work I'll finally have a choice. So if anyone has any ideas, has experienced this in other parts of the country or has any idea what could be going on please say. Any information is better than not knowing, and together maybe this will be answered.
  3. Hello, Can somebody test this fieldtest/netmonitor android app on LTE and tell how it works. Here is the link to Google Play: G-NetTrack Short description and screenshots: This is a fieldtest/netmonitor application for UMTS/GSM/LTE/CDMA/EVDO network. The application monitors the serving CELLID, LEVEL, QUAL, MCC, MNC, LAC, technology, cell serving time and neighbor cells CELLID/PSC and LEVEL.
  4. From the FireceWireless website: NetZero to ditch Verizon in favor of Sprint: http://www.fiercewireless.com/story/netzero-ditches-verizon-contract-will-launch-sprints-cdma-network/2014-01-15?utm_medium=nl&utm_source=internal Data Plans: The no-contract NetZero Sprint 3G plans break down as follows: Free: No monthly fees, data allotment of 200 MB per billing cycle. Free plan limited to 12 months only. Basic: $9.95 per month, 500 MB per billing cycle. Plus: $19.95 per month, 1 GB per billing cycle. Pro: $34.95 per month, 2 GB per billing cycle. Platinum: $49.95 per month, 4 GB per billing cycle.
  5. 1x Advanced on 1900Mhz?

    Will 1900 be reframed for LTE only? Or is 1x Advanced not worth it at such a high frequency?
  6. CDMA is leaps and bounds better then GSM... And LTE was built upon GSM... And WiMAX is a little something different. What did Qualcomm have as their 4G initiative? Was it better then LTE/WiMAX? Was Qualcomm involved in either LTE/WiMAX development? Any CDMA goodness within either?
  7. The iPhone 5 goes back to a multi-model scheme thanks to the disparate bunch of LTE bands everyone is using. I took a look at the breakdown, as well as at the non-LTE radios, to see what this would mean for Sprint... First, what bands does each iPhone support? Apple has a list: http://www.apple.com/iphone/LTE/ Version #1 (A1428) is, more or less, the AT&T edition. 700MHz lower B+C and AWS First off, looks like AT&T still wants to do LTE in AWS. Second, while the iPhone only has quad-band HSPA+ (like the iPad; 850/900/1900/2100), its HSPA and LTE bands line up with T-Mobile's refarmed PCS H+ and upcoming AWS LTE. Which means of course that, if you can get an unlocked A1428 iPhone, it will probably be faster on T-Mobile than AT&T. Just like the 4/4S are when using TMo PCS H+ today. Version #2 (A1429 CDMA) is the Sprint + Verizon edition. 2100, 1800, Cellular, upper 700, PCS+G This is the most interesting model of the three IMO. Despite SpectrumCo, there's no AWS here for Verizon. There is, however, support for a band that Verizon probably won't launch for several years: LTE in Cellular. I'm sure this was due to KDDI needing the band, but it's entertaining nonetheless. And of course Sprint's current LTE deployment is fully supported, though LTE in SMR or 2500 isn't. On the non-LTE side, the phone is the only mass-market phone sold in the US that supports EvDO Rev. B. This, like the inclusion of LTE-850, is due to KDDI/au in Japan. On the other hand, Apple is using correct nomenclature for the 850 (vs. 800) band now, designating everything as 850MHz except CDMA on this model. Which of course indicates that the iPhone will (finally) support Sprint's 1x SMR network (so iPhones won't be at a coverage disadvantage to anything Sprint has sold in the past year from another manufacturer). The iPhone 5 also supports HD voice, which I'm guessing is the same thing that is supported on the Evo 4G LTE. So look for Sprint to be the first carrier in the US to support HD voice on the iPhone. Version #3 (A1429 GSM) is the international LTE version. 2100, 1800, Cellular Nothing is surprpising here; the iPhone may not nab everyone's current and future LTE bands, but having three international bands supported is a happy medium for a world phone. My guess is that this model is just the CDMA model with the additional bands/techs disabled in software, since it shares a model number with the CDMA version and has a subset of the CDMA version's bands. This means that Apple is only producing two versions of its newest phone (and two versions of its newest iPad) for the entire world...one for AT&T (okay, not quite but close) and one for everyone else in both cases. This state of affairs leaves smaller carriers in a bit of an odd predicament. The AT&T edition of the iPhone has AWS and 700 lower B + C bands built in for LTE, which is good for T-Mobile (though TMo won't get to use its AWS HSPA+) and better for someone like CricKet or MetroPCS than before (since both will deploy LTE on 1700). However there's still now AWS CDMA on any iPhone, nor is there an iPhone with both AWS and PCS LTE support. This presents a no-win situation for someone like US Cellular, who has CDMA on 850 and 1900 (A1429) but will deploy LTE across 700 (including lower-A at times) and AWS (A1428, except for the A band) and in certain cases 850 and 1900 (A1429). Of course, US Cellular would have to pick A1429, but then they will have to live with a phone that is 3G-only in any area where their cellular + PCS holdings are,'t enough to support both CDMA and LTE. But hey, at least Sprint now has an iPhone that can do LTE and CDMA just as well (band-wise) as any other currently-available Sprint phone.
  8. I am really trying to grasp everything in all of these threads but do keep coming up to questions about all of the terminology. What would be the best place to decipher everything? I did some searching but could not really find anything summed up in one place. I have found various things scattered but it seems everything I think I understand something else comes up and gets me all mixed up again. It is hard to tell which terms are upgrades of same technology vs. a totally new technology. For instance I am trying to figure out PCS1900 vs CDMA in 800 band or 800SMR bands? I know the lower frequency typically gets through buildings better but where does the difference in PCS versus CDMA come in? Is CDMA800 the same thing as the SMR 850 but just a different frequency or is it totally different technology on different frequencies?