[Q] unlocked note 3 signal - Android Q&A, Help & Troubleshooting

Hey all, I have an unlocked Verizon note 3 sm-900v and I'm on tmobile network. When I first got the phone it said tmobile as carrier then it switches to att and stays there forever never switches back to tmobile. If I Factory restore it will go back to tmobile for a while then goes to att again. Why does it do this and can I make it stay on tmobile somehow. I am well within tmobiles 4G lte coverage area and have had lte the entire time. It appears that when my phone is on att the signal is weaker (fewer bars than when it showed tmobile as carrier) I'm confused anybody know anything. Thanks for the responses.

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[Q] [MODEM] Verizon S5 on T-Mobile

Hello All,
A family member recently purchased a VZW S5 and now I've helped to move them from VZW over to T-Mobile.
The phone is factory unlocked, and with the addition of the T-Mo SIM + the T-Mo APN, everything is up and running.
The key issue I am seeing is the signal strength vs. that of a true T-Mobile Handset. Example, in my house, I have 4 bars on my T-Mo Galaxy Note 3 but 1 bar on the VZW Galaxy S5. Additionally, it's constantly switching from LTE to H+ to 3G.
I've rooted the S5, custom ROM'd it, and even did the mod to unlock all of the different LTE bands but this hasn't helped.
The phone was running the latest FW from Verizon with the most recent Modem, but I'm wondering if there is another modem I could flash that is T-Mobile oriented that may help to improve the service.
Please let me know, thank you!
- Taxmaster
Taxmaster said:
Hello All,
A family member recently purchased a VZW S5 and now I've helped to move them from VZW over to T-Mobile.
The phone is factory unlocked, and with the addition of the T-Mo SIM + the T-Mo APN, everything is up and running.
The key issue I am seeing is the signal strength vs. that of a true T-Mobile Handset. Example, in my house, I have 4 bars on my T-Mo Galaxy Note 3 but 1 bar on the VZW Galaxy S5. Additionally, it's constantly switching from LTE to H+ to 3G.
I've rooted the S5, custom ROM'd it, and even did the mod to unlock all of the different LTE bands but this hasn't helped.
The phone was running the latest FW from Verizon with the most recent Modem, but I'm wondering if there is another modem I could flash that is T-Mobile oriented that may help to improve the service.
Please let me know, thank you!
- Taxmaster
Click to expand...
Click to collapse
My understanding is that the phone simply doesn't have the hardware for all of the bands. It's not as simple as just flashing, to my knowledge. For example, I don't think the phone supports 2100 which is used by Tmobile in some areas.
I just went through the same process. Enabled the bands, tried different modems, no improvement. Finally, bought a T-Mobile S5 and sold the Verizon. Performance is far better, plus it supports Wi-Fi calling.
Sent from my SM-G900T using Tapatalk

[Q] [Question} AT&T 850A Unlocked & Metro PCS

Hello,
I have been trying to search for this information for a bit already. I just ordered an unlocked AT&T Alpha unlocked from amazon.com and I would like to use it with the METRO PCS $60 unlimited 4G plan. Will this work? I couldn't tell if I needed to have the phone rooted or just unlocked.
Thanks!
I have phone unlocked and have been using it on tmo without issues for a couple of weeks now
Thanks for the reply. I am assuming that it should work on the network, since Metro PCS and TMO are the same network. I want to go with Metro PCS to save the $20 per month for the same maxed out plan. I read reports of people using other phones, like the One M7 and were able to get it working on Metro PCS along with being able to do the tethering trick.
Anyways, thanks again for the reply.
stivelio said:
I have phone unlocked and have been using it on tmo without issues for a couple of weeks now
Click to expand...
Click to collapse
I am planning to get 850A to use on Wind mobile(Canada)
does it work on tmobile HSPA network?
I have this phone Galaxy Alpha 850M
on Metro PCS right now.
I have excellent voice and call quality
no texting issues etc and lock onto signal extremely well.
Just drop a SIM in set up with Metro and will be fine IF international factory unlocked 850M .
You will have LTE and drop to 3G H H+ during calls usually with voice and Data and even have E in very bad signal areas- all the Bands are in the Phone.
Better speaker than AT&T Qualcomm and cool , black menus.
4 G LTE Metro PCS Branded phones have VoLTE so you have Voice and Data while staying on LTE Band-
This phone of course lacks the Metro Software to do that so will always drop to 3G H or H + during calls or where LTE Signal is weak but still an excellent phone.
For WIND MOBILE - the 850M I have has the 1700 and 1900 Bands for 3G,H, H+ ( 1700 shows up sometimes in Service Menu but not listed in most specs for 850M).
The LTE bands are :
700/850/1800/1900/2100/2600 AND
AWS .
So you should be good in Canada since most Carriers are same Bands as TMobile/Metro USA..
I have the AT&T 850A and I use it on my T-mobile network.
I just disable all the ATT software n once you do that, you dont see it anymore. Its in hiding. Hotspot will work if you root it, but all ATT have blootloader lock. Wifi calling will not work.
This is my secondary phone I use for when I go jogging. My primary phone is the Note 4.
Thanks for the replies. I got the phone and it is working wonderfully on Metro PCS but the odd thing is that it is on the AT&T network and not T-mobile. I have no idea why. I thought Metro was only for T-mobile but it works just great! Cute phone and quick.
For those looking at this thread, I got an unlocked AT&T branded phone from Amazon.Com and it does work on Metro PCS. However I haven't tried the WiFi bypass yet.
Wow. That is weird but good.
You mean you have a Metro PCS Sim but the phone is showing AT&T ?
That is probably just the phone Booting under AT&T but actually on Metro PCS with Tmobile Towers.
On lower left corner you will see Metro PCS..after start up.
Are you getting LTE ?
And when you make a call does Status change to 3G ?
No it isn't. The contract has Metro PCS printed next to AT&T. I never saw that before.

Using Galaxy S3 (sch-I535) from Verizon with AT&T sim-no HSPA or LTE

Not including myself, the rest of my family is on Verizon. My daughter recently upgraded her S3 so I have it now as a handmedown. I have AT&T
and have been using it with their sim. (Verizon doesn't lock their smartphones) I get normal voice coverage but can't get anything more than
edge on data. I have 2 APN's programmed that I found here. One is HSPA+ and the other is for LTE. If the sim is in an AT&T phone, I get LTE
coverage but in the S3, nothing more than as mentioned. Is this because AT&T doesn't have the IMEI registered on their end or is it something else?
I'd really like to get more out of this phone. Any ideas?
Thanks ahead of time,
Todd

Does the Verizon V10 provide 4G LTE using a T-Mobile SIM card?

In the G4 forum, we realized that Verizon has put some sort of firmware on the device that disables 4G LTE in GSM mode using a T-Mobile (or AT&T for that matter) SIM card, even though the phone does support the bands. When the phone is switched to CDMA mode, then 4G LTE works fine, but unfortunately voice doesn't work at the same time. See this thread here for more details: http://forum.xda-developers.com/verizon-g4/help/lg-g4-vs986-t-mobile-lte-problem-t3195888
Can anybody try out the same with the V10 and report back? Would be intersting to know if Verizon now intentionally started crippling these devices (since it used to work fine on the G3), or this is some sort of bug that only applies to the G4 right now. Thanks!!
I use a VZW branded V10 with my tmo sim and can only get H or H+. Rarely does it get 4gLTE. And when it does sms does not work.
Thanks... but you do get 4G LTE sometimes when in GSM mode?!?
Can you change the system mode in the mobile settings to CDMA and check if it gets 4G LTE with the T-Mobile SIM card? And then in the same place switch it back to GSM and see if it falls back to H+ only? That's the behavior we saw on the G4, like Verizon is intentionally blocking LTE om GSM, even though the phone supports the band.
konradsa said:
Thanks... but you do get 4G LTE sometimes when in GSM mode?!?
Can you change the system mode in the mobile settings to CDMA and check if it gets 4G LTE with the T-Mobile SIM card? And then in the same place switch it back to GSM and see if it falls back to H+ only? That's the behavior we saw on the G4, like Verizon is intentionally blocking LTE om GSM, even though the phone supports the band.
Click to expand...
Click to collapse
I am not sure if it is the same with Tmobile, but when trying to use a Tmobile variant on AT&T, LTE does not work either. It seems that you have to get the device provisioned by the carrier for LTE using it's IMEI, not just doing a SIM swap.
konradsa said:
Thanks... but you do get 4G LTE sometimes when in GSM mode?!?
Can you change the system mode in the mobile settings to CDMA and check if it gets 4G LTE with the T-Mobile SIM card? And then in the same place switch it back to GSM and see if it falls back to H+ only? That's the behavior we saw on the G4, like Verizon is intentionally blocking LTE om GSM, even though the phone supports the band.
Click to expand...
Click to collapse
Yeah if i switch to CDMA, i get 4G LTE very often though i cannot send message or call
Can anyone tell me if u get the annoying unauthorized sim card message... if so can we stop it from appearing. Had that issue with my verizon htc m8.
I tried at a T-Mobile store earlier to see if one of their Sim cards would work in my VZW V10 and I had the same issues.
The pop up saying "not a Verizon Sim" or whatever came up after a few minutes of dismissing it as well.
When it first loaded up, I changed the APN to match the in-store display V10 with its exact settings. I changed the network mode from global to LTE/GSM and after a minute it showed it was connected with 4G LTE, but it went away after a few seconds. I couldn't get it to come back, and it only had like 2-3 bars, and H for data. I know it wasn't from lack of signal because the display V10 had full bars with LTE.
I also tried sending a text using the T-Mobile SIM to one of my other numbers, but it didn't go through at all. Didn't try placing a call, but regardless it didn't seem like it would be worth it to switch.
No 4g LTE
Still waiting for a fix,can get no 4g LTE on t mobile,I'm on marsmallow so I lost root access
I'm Canadian, I just bought an unlocked Verizon V10 on ebay and I'm planning to use it on a Canadian carrier. Does this mean I should expect to have no LTE data at all on this phone in Canada? Poops I never would have bought it if that was the case.
Let me know, I may try a return without opening the package.
how different is the speed between HSPA+ and LTE? is it noticeable
does it bother you that its not LTE?
I bought a phone from a seller on swappa. when he listed it. the phone had a clean ESN.
took it to the verizon store to setup verizon prepaid and it was flagged a non pay account
cannot activate.
I am using my ATT sim card right now
I can return it but on the secondary market is many LGV10 phones are going to be flagged for non payment when the accounts go into collections, it then buyers could get screwed.
I might just stick with the phone. But i can never use it on verizon. I have to wait for a Root on marshmallow, and fix after that if I want LTE speeds on ATT or TMO
I got LTE working. In happy with it. I think the US phones work in Canada even with a bad imei.
Another area on a long long laundry list where canada is better than the usa. hockey and standardized healthcare being 1 and 2... hahaha
I was having the same issue on my Verizon v10 vs990 on my T-Mobile network. I went into the APN settings and set it to LTE/CDMA and it works perfectly. Calls, SMS and data.

T-Mobile Note 8 Not Won't Work on Verizon

I purchased a Note 8 from T-Mobile in September. I was told by T-Mobile that if I didn't like the service, I could take my phone and go back to Verizon. Unfortunately, the coverage in my rural area is too spotty. I went to Verizon and they said my Note 8 is not compatible with their network. They said I can connect to the 4G network but I can't connect to the 2G and 3G networks where I can make calls and send texts. I was told I can flash the phone so it will work on Verizon. Is this true and if so, how do I do it?
Thank you so much in advance,
Mike

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