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I have an international S7 Edge. Does it matter which UK (O2,Vodafone,EE,etc) stock firmware I use? I read that the bands need to match or battery performance will suffer.
Thanks!
When I checked the phone I got from B&H for use on AT&T, the phone lists as being from Panama. Works great on AT&T. If using a different firmware is advisable, I'd like to know also.
I just bought the 935F and I am stuck on Edge data. I also have the At&t model of the gs7 edge and I get full LTE and good speeds in the exact same spot. Same sim card, and I believe I'm using the correct APN settings. I want to switch to the international model because at&t ruins this phone with bloatware. I get a lot of lag on the at&t gs7 edge, and no lag at all on the 935F. Now I just need the LTE to work!!
Anyone able to try and help? I did search the forum first and didnt see anything relevant.
do you see 4G instead but not LTE on your 935F? US carriers call HSPA+ 4G (while it's 3G+) so when their branded phones are in LTE they add an LTE (or 4G LTE for tmobile) icon. My G935F always shows 4G but it's actually LTE. You can dial *#0011# to check for reception or download the LTE discovery app to check your reception
Remix22 said:
do you see 4G instead but not LTE on your 935F? US carriers call HSPA+ 4G (while it's 3G+) so when their branded phones are in LTE they add an LTE (or 4G LTE for tmobile) icon. My G935F always shows 4G but it's actually LTE. You can dial *#0011# to check for reception or download the LTE discovery app to check your reception
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Thank you very much for the reply. I see E for edge data. I think I may have made some progress by changing the APN settings though. I am seeing LTE now, but the speeds are terrible. Nothing close to what I was getting with the ATT branded version of the GS7E.
Anyone know exactly what APN settings the G935F should be using on ATT? I have unlimited data, so I want to be able to use it!
toptekjon said:
I just bought the 935F and I am stuck on Edge data. I also have the At&t model of the gs7 edge and I get full LTE and good speeds in the exact same spot. Same sim card, and I believe I'm using the correct APN settings. I want to switch to the international model because at&t ruins this phone with bloatware. I get a lot of lag on the at&t gs7 edge, and no lag at all on the 935F. Now I just need the LTE to work!!
Anyone able to try and help? I did search the forum first and didnt see anything relevant.
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Click to collapse
It has nothing to do with the APN, but you have to tell AT&T you have an AT&T branded phone and give them an imei of that phone. Or your 935F will not be able to get lte.
Psyscope said:
It has nothing to do with the APN, but you have to tell AT&T you have an AT&T branded phone and give them an imei of that phone. Or your 935F will not be able to get lte.
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Hmm, Ok thank you. I'll try that now. I haven't been on att in years, and don't remember having to do that but I will now.
Yeah if you don't have an ATT branded phone they will limit you to the 4g network and not the new LTE network. I bought a cheap Motorola LTe phone that was an at&t approved. I gave them its imei, and I started to get lte.
Psyscope said:
It has nothing to do with the APN, but you have to tell AT&T you have an AT&T branded phone and give them an imei of that phone. Or your 935F will not be able to get lte.
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Ok so I worked with At&t and gave them the IMEI, but still no LTE data
Psyscope said:
It has nothing to do with the APN, but you have to tell AT&T you have an AT&T branded phone and give them an imei of that phone. Or your 935F will not be able to get lte.
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No, you do not have to give AT&T the IMEI of your 935F phone.
I just got back to the US, popped my AT&T SIM card in my new intl S7e (935FD) and LTE works as it should. I get speeds of >10 Mbs
LTE bands 2 & 17 are used (in my area - Portland)
Not getting full speed LTE
I have the 935FD S7E. I just went to the AT&T store as I needed a nano sim. The guy who helped me did a Speed Test right next to me performing the exact same test. His AT&T S7 was receiving in the mid to high 30's for download speed while I was getting in the mid 20's. He checked the APN, we assumed that I was getting an LTE speed even though no LTE icon showed. However his S7 was receiving significantly consistent faster data rates than I was getting.
Is there anything I can do to resolve this?
This will be the main hindrance for me buying the international version. If someone gets the LTE thing figured out I'm all in
Sent from my SAMSUNG-SGH-I337 using XDA-Developers mobile app
For what it's worth, AT&T LTE problems in my case were caused by custom ROM.
I just got International S7 Edge (G935F), and without thinking, rooted it and installed SuperMan-ROM 1.8.1. In that state I did have LTE formally, but speeds were very bad. Tried turning data on/off, changing APNs - nothing helped. As a result, in some places data connection barely worked (1.0 Mbps down / 0.1 Mbps up), and the best result reported by SpeedTest was around 4 Mbps up/down. At the same time, when I moved this SIM card into older XPeria phone, it consistently showed ~15 Mbps up/down, which was normal performance for me on AT&T prepaid in NYC. Unfortunately, I didn't check LTE performance with the original default ROM on the Edge, but I recorded all versions.
I went back to stock ROM using this German stock firmware. It was possible to switch to English during installation. Other downloads in that thread are dead links. I immediately did official OTA update, and after that, I now have normal LTE performance on AT&T (15+ Mbps).
I am pretty sure that at least in my case, the radio which the custom ROM insisted I have (G935FXXU1APEQ) was the problem. After going back to stock, I have baseband G935FXXU1APD1, which is what I had out-of-the-box.
cozzamara said:
For what it's worth, AT&T LTE problems in my case were caused by custom ROM.
I just got International S7 Edge (G935F), and without thinking, rooted it and installed SuperMan-ROM 1.8.1. In that state I did have LTE formally, but speeds were very bad. Tried turning data on/off, changing APNs - nothing helped. As a result, in some places data connection barely worked (1.0 Mbps down / 0.1 Mbps up), and the best result reported by SpeedTest was around 4 Mbps up/down. At the same time, when I moved this SIM card into older XPeria phone, it consistently showed ~15 Mbps up/down, which was normal performance for me on AT&T prepaid in NYC. Unfortunately, I didn't check LTE performance with the original default ROM on the Edge, but I recorded all versions.
I went back to stock ROM using this German stock firmware. It was possible to switch to English during installation. Other downloads in that thread are dead links. I immediately did official OTA update, and after that, I now have normal LTE performance on AT&T (15+ Mbps).
I am pretty sure that at least in my case, the radio which the custom ROM insisted I have (G935FXXU1APEQ) was the problem. After going back to stock, I have baseband G935FXXU1APD1, which is what I had out-of-the-box.
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Click to collapse
Imgo to try this you flash via Odin?
Has anyone experienced bad or inconsistent LTE speeds on the International S7 Edge Duos while on AT&T? I was out walking the dog yesterday and my speeds were ranging anywhere from 0.3 megabits/second to 12 megabits/second depending on which block I am on. This morning, on my commute to work, I had anywhere from 2 megabits/second speeds or 32 megabits/second speeds depending on where I am on the road.
Is the International not nearly as good with using AT&T band LTE? Is there perhaps an APN setting I should be making? Or should I just learn to live with this?
Thanks in advance
No one has encountered this at all? Perhaps it's emblematic of a potential defect?
Im on att using g935fd, no issue with lte. Im ranging from 15-30 mbps depending on the area. im in boston,ma
in dallas with a 935FD and i've been getting average 29mb down/19mb up... check your APN and also consider testing with another sim card if you have one available.
I'm having the same issue. There is definitely something going on with the Duos. I'm on T-mobile and experience weaker signal (10-15 dBm) on Duos than I get on my 935T sitting next to it. I've flashed several modems, csc's and firmwares. Nothing has helped. Even lost signal last week at a clinic and had to tether of my wife's T-Mobile s7 edge.
VinylJStar said:
I'm having the same issue. There is definitely something going on with the Duos. I'm on T-mobile and experience weaker signal (10-15 dBm) on Duos than I get on my 935T sitting next to it. I've flashed several modems, csc's and firmwares. Nothing has helped. Even lost signal last week at a clinic and had to tether of my wife's T-Mobile s7 edge.
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It got so bad that I am returning the phone. The speeds I was getting was just too low to make it a useful device.
Maybe its the rom. What firmware you guys are using? I flashed the stock g935f PHN firmware, CSC, AP and then OntheedgeLite UX rom.
There was another posst with OP having similar issue. I have issue as well. But flashing BTU csc ap bl and cp helped me gain better 4g around my home, so I thought problem was fixed. but when I go to poor reception areas and phone is switching to 2g/3g bands, I lose 4g unless restart or messing with sim options switching 4g between sim1 and sim 2.
currently on stock samsung touchwiz rom. BTU cp, csc, ap, and bl
Is it missing the appropriate at&t bands ? I'm looking at note duos as an alternative to the ATT version a day it's meant to be the same chipset and that misses one of the LTE bands.
Sent from my SAMSUNG-SM-N920A using XDA-Developers mobile app
I have an S7 Edge from At&t and use it on T Mobile, I would like to use all the features available on Tmobile devices (like WiFi calling). Is it possible to flash the Tmobile fw onto the At&t S7 Edge?
Thank you for any help.
Cali
Me too
I would like to know too but flash Verizon on a tmobile and att to verizon.
I've already posted on Reddit looking for advice, but realised I might be more likely to get some good answers here. I’ll start with the TL;DR… What stock firmware (preferably without bloatware) should I flash on a Verizon Galaxy S10+ SM-G975U that’s going to be used in France with a French SIM, to get the best network coverage?
Some more info: I bought a refurbished Galaxy S10+ which was said to be an unlocked model originated in Europe. Turns out it was shipped from the US, and is a Snapdragon-based Verizon phone.
To get rid of all traces of Verizon, I successfully flashed U1 XAA firmware downloaded with Frija (SM-G975U1, XAA, June 1 2021 Security Patch Level) which did get rid of the bloatware, and now doesn't have the Verizon startup screen. Success? Not quite...
On this firmware, 4G signal doesn't seem to get picked up as easily as when it was on the original Verizon firmware. It also shows LTE rather than 4G in the notification bar as it did before flashing the U1 firmware.
My S9+ (Exynos 'F' model, flashed with French non-carrier firmware) gets 4G signal (-115 dBm 25 asu) on a certain spot on my desk. In the exact same spot, the S10+ gets H (-101 dBm 19 asu), and I struggle to find a spot in the house where it gets LTE/4G. This makes me wonder if some required frequency bands aren't supported on this firmware?
I'm wondering whether the U1 firmware was not the best option after all? If U1 isn’t the way to go, what firmware version would you suggest? Should I go back to U firmware instead, or maybe go for the Canadian W XAC unbranded firmware? Not sure if there's even a version of U firmware that doesn't come with carrier branding + bloat...
Basically, I'm looking for stock firmware without carrier bloatware, that'll work well on the SFR network in France, and ideally show 4G in the notification bar. It's actually a surprise birthday gift for my wife too, so I'm trying to prepare it for her so she has the best experience with the phone as possible.
Cheers in advance for any advice! You might help me save this from being a bit of a disaster of a birthday gift
Quick update. I've flashed SM-G975W XAC (unbranded Canada) firmware, and now the phone picks up LTE signal in parts of the house where it would only get E signal whilst on SM-G975U1 XAA firmware. So I know that the Canadian firmware is at least a bit better in my situation.
However, the LTE speeds are still between 25%-50% of what I get on my S9+ Exynos on French unbranded firmware using the same SIM. And obviously the phone still shows LTE in the notification bar, rather than 4G.
I might try going back to Verizon firmware to see if the LTE/4G performs better, which might be the best route to go, even with the bloatware and Version branded annoyances.
Ok, I thought it might be best to post my last update to close this off, in case it helps anyone else who stumbles on it in future.
I was going to do back-to-back tests on U1 XAA, W XAC, U VZW and U CHA firmware, in that order, to see what would work best and give a good 4G signal.
I started with flashing the latest U1 XAA, which had the same poor signal and only showed LTE in the notification bar and not 4G, as before.
Next up, I flashed the same W XAC (Canadian non-carrier) firmware as before, but this time I left my SIM card in the phone. Out of paranoia I'd always removed it when flashing, but when the phone booted up it showed 4G in the notification bar, not LTE like before, and signal strength and speeds were good!
So I stopped there and have stuck with SM-G975W XAC firmware. It seems to have achieved what I want—decent performance on the French SFR network, without bloatware, and correctly displaying 4G—so I decided not to push my luck and stop flashing any more firmware versions, just in case I end up with an expensive paperweight.