Help with Network signal - T-Mobile Samsung Galaxy S8 Questions & Answers

hi guys, buy an s8 from TMobile on Ebay. Upon arriving in my country (Honduras). buy the network unlock on Ebay via remote USB (SAMKEY). at the beginning everything working but after a few days the phone shows "only emergency call".
Since then in some days it recognizes a signal and others do not.
The phone is not blacklisted in my country but it financed in the USA (TMobile blacklist).
Does anyone know what could be if it is software error or hardware error?
Thanks Guys!

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[Q] My HTC HD7 - Signal problems

Hello,
i recently purchased my HTC HD 7 from o2-uk (PAYG); Happy as Larry with it!
The only problem is, i don't get 3g signal, i get it very rarely in the middle of town centres etc.
I have unlocked the phone (htc imie unlock request type) to try it with my '3' simcard. Now i am definite that this sim card gets 3g signal in set places, and in those set places in the HD7, it doesnt get 3g signal
The question is, is my phone faulty? I from a friend that they have had to send theirs back because there is a problem with some HD7's.
After e-mailing o2 they said that i couldn't return the phone for a repair because unlocking the phone broke the terms and conditions.
"Tariff transfer and Mobile Phone locking
13.1 If you wish to transfer to another O2 tariff, please contact O2
Customer Service, for applicable qualifying criteria and charges
13.2 Your Mobile Phone is likely to be locked to the Network. If this is
the case, you must not insert another operator's SIM card into the
Mobile Phone without an unlatching code (which is not your PIN code). We
will on request provide an unlatching code after a qualifying period.
Failure to enter the correct unlatching code may result in your Mobile
Phone becoming permanently blocked. We can accept no responsibility for
Mobile Phones blocked in this way. Contact O2 Customer Service for
further information on the qualifying period, applicable conditions and
charges. This clause 13.2 does not apply if you have purchased a SIM
card only and, at the time of purchase of the SIM card, you are
connected to a network other than the O2 Network."
Looking through the quote they sent me of the T&C's i can not see where i have broken them as it says
"you may not insert another network providers sim card without the unlatching code" and nowhere does it say that i should get that code from o2.
Anyway, my question is, shall i try to dispute the fact that they owe me a fixed phone, or will there be a software update that could fix my problem
Torchzack
Make sure you choose P&G in Connection Setup
That's the first thing i did because it wouldn't even connect to the internet, however there has been no improvement.
I am going to my local o2 shop today to see what they say.
Hopefully be a replacement phone and i can use a smartphone that actually has internet on it!

Galaxy-s not working 3g or gprs

Hello,
in Uk a brought a Galaxy-S (T-mobile) and unlocked it. Now I'm back in Italy and I put my old SIM card. The Phone works, except for 3g, edge or any mobile connectivity. I think there is two options:
- The phone is still locked.
- My sim is very old (from 1999), may be no more compatible with 3g.
How do I find out which is the case and how I solve that?
Thanks guys (girls too).
No network
Hi m8
Could you please check your imei number, I did exactly the same.
I bought my sgs on firmware 2.1 & unlocked it via free unlock tool, I then messed with some new firmwares. Recently tried to sell my phone as unlocked but when buyer put their sim in, It shows a signal but no data network connection.
After messing around with different sims i did a check & noticed my firmware is some stupid 04999????
Regards
Mark
What does that mean?? Is it related to IMEI somehow?? What should I check about it? How do I fix that? I've 2.2 by the way

Not registered on Network Message please help

I bought a galaxy s3 I905 today and when I put in my Vodafone sim it said it want a sim network lock pin so I used the *#197328640# method to unlock it and it worked
http://forum.xda-developers.com/showthread.php?t=2014982
Now I have mobile data internet works fine on 3g and getting 3g+ symbol but when I try to make a call I get mobile network not available. It is an of the box phone checked IMEI with *#06~ and its there. Anyone got any ideas.
After a reboot I am not getting the message mobile network not available please help is it a setting I have changed
Thanks
zeroasylum
Problem sorted was sold black listed phone. Claim made through papal to seller and being returned.

[Q] Unable to connect to mobile networks

Hey, bought an S5 from China. Turned out to be the SM 900A. I'm in the UK, it worked when I got it, so thought nothing of it.
Two weeks later, it stops being able to connect to any network, with any SIM card I try. It detects networks but is unable to connect to any of them.
Have looked online and things suggest it is region locked... how can I test if this is the case? More importantly, how can I get it unlocked? What I don't understand is why it would work connect to UK networks for the first two weeks if it was region locked.
Cheers
anyone?

Can't Activate Note8, fails on configuration with Sprint & Boom Mobile

Hi Guys, I'm wondering if someone more knowledgeable can help advise. I've spent 12 hours and cant activate my Unlocked Qualcomm Note8 on any of my service providers (SMN-950U1.)
I want to use it on Boom Mobile Red (Verizon MVNO)
I cant get the Network Operator to configure, when I select Verizon it fails on configuration. I'm not referring to APN because I do not even get calls, the Operator is listed as "Emergency Calls Only". The Sim works perfect on my Pixel XL and iPhone 7 Plus. This phone was purchased unlocked form Samsung direct with clean IMEI. I called Samsung and they have no idea, they said the phone is defective, which I believe it is not.
I had an issue activating with Sprint and still have not had Data working, though I was able to get calls. I've given up w/ Sprint and will upgrade that line with a iPhone X.
I inserted my friends Verizon Post Paid Sim from his Moto Mod phone and everything was perfect (calls, TM, LTE calling) and the phone got LTE+. Is it possible the Note8 unlocked will only work with the big 4 carriers, ST and TW? I read a similar issue people from Boost Mobile have when they insert their sims it says invalid Sim. I really have no idea what is going on - Boom doesn't have many customers and their support team has never delt with this issue, they said the phone is defective. Has anyone been able to use a Unlocked Note8 on Boom? I've tried flashing various variants of firmware, including Verizon with no success. I'm puzzled with what is going on.

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