Database Users

[Q] carrier unlocking jfltecan i337m on fido

Hello, I can't seem to find the perfect answer in another thread.. I'm on a google experience 4.4.2 rom, with the MK6 modem and i'd really like to unlock my phone for use on a different carrier. i tried flashing an older modem but no luck.. is there a way i can do this myself without going into a shop and paying $40?

[Q] any easy way to SIM unlock a GT-I9500 ?

Hi guys,
I read a couple of threads and tried a couple of things and didn't work... Im trying to sim unlock my Galaxy S4 GT I9500 on stock android 4.3 not rooted and is not working.
I read about a code using *#0011# code and didn't work.. Post was not specific about using no sim, original carrier sim or desire carrier sim.. anyway I tried all and was a failure.
I read another thread about flashing a modem and downgrading the firmware but wasnt specific enough about how to do it and the requirements (android version, rooted?, how to do it, etc)
I try one of those "code pages" and even they couldnt help me. My carrier is Movistar in Nicaragua.
Is there is any easy way to SIM unlock my phone? maybe by just installing a pre-rooted, pre-unlocked rom? or is there is a page/guide/video with specific instruction on how to do it?
thanks in advance.

I think the step by step instructions on SIM unlocking in the main thread on the topic are pretty specific. They don't mention downgrading the device modem through Odin however because they were written before Samsung patched the exploits that allowed the SIM unlock to work.
Downgrading the modem to an Android 4.2.2 version in the AP/PDA slot in Odin is necessary to run either unlock metbod. However, you can really mess things up trying to unlock if you aren't careful, especially with the service menu exploit.

S4 Sim Unlock Code

Hi. I'm trying to unlock my S4 to use another sim. It's locked to EE. It's now been 2 years so I've got the S6 today. Giving the S4 to my partner.
I tried the *#0011# method. Can't get to the UMTS menu. Tried the Region Unlocker App without success. I tried downloading a random 4.2.2 ROM from the development section to access the Service Menu and I'm now stuck in a boot loop. I used to have 4.4.2 installed.
Please help?

Unlocking only works on stock ROMs. If you downloaded a Jellybean ROM from the development section, you're doing it wrong.
While the unlock methods used here do work if the directions are followed correctly, there's no guarantee the unlock will be retained with ROM updates or baseband changes. You're better off asking EE for an unlock code, or buying an unlock code. Unlike the unlock methods here, once that code is input, it unlock the device for good.

Questions belong in Q&A, not General.
Thank you.

Samsung Galaxy S4 Unlock

Hi,
I have a Samsung Galaxy S4 Att with Android 5.0.1. I requested unlock code from att and the code they gave me is not working.
Can some one help me with unlocking the device.
Thanks,
Sravan.

I haven't seen anything about unlocking an S4 running 5.0.1, but you can flash the phone back to nb1 base and unlock it. Then when you flash back to 5.0.1 the unlock should stick. See this thread on unlocking, for instance. See this or this for flashing back to 5.0.1.
Disclaimer: I do not own an S4 so can not test this.
You may be able to find more information in the forum here if you search.

First of all I can't believe AT&T actually gave you an unlock code that's amazing the best bet to sim unlock your phone is to downgrade your modem then use region lock away then upgrade your modem again then boomshockalocka you will have a sim unlocked device
Sent from my i337 on dark carnage rom

network unlock or modem swap i337m on 5.0.1

Hey people, I have an issue going on here.
I was going to unlock, but decided to reflash firmware and change the csc from rogers over to bell.
Kies recognizes the phone now as being a 'bell' phone, and have done an update just to confirm it but it still will not accept a bell sim. Every time I have inserted a bell sim it requests the 4 digit unlock code. The sim works just fine in my S3 and another bell S4, so that is not the problem.
All settings in the phone also show it to be 'bell', home screen and all, so the csc did take.
All the modems/firmware on sammobile are multi-csc, as i have tried to just flash the modem alone after I extracted it.
I could care less about being truly carrier free, as I am locked into a bell agreement through work.
Any suggestions on this, or do i have to purchase a code? I assume its locked now so I cannot downgrade to my understanding to a lower modem to use the service menu to unlock.
Thanks for the input.

I've flashed from a Bell 4.4.2 to Telus 5.01 without issue and the phone will remain sim-locked. The only difference I have seen between the Bell, Telus, and Rogers ROM are the carrier apps included with each ROM.
The sim unlock code is 8 digits long.
You should be able to downgrade the i337m's 5.01 stock ROM to a i337m 4.4.2 stock ROM. Then install the 4.2.2 modem, root the phone, run region unlock app, re-flash stock 5.01, and the phone will be sim unlocked. Doing this will trip the knox counter to 1 and void any remaining warranty.

I tried to downgrade, but it didnt take. I will try again. I know there was a discussion on booting the phone and not signing into google then reflash again. Is this needed?
Thanks for the reply.

Well, I got it to work this time. Much appreciated

You tried to flash a stock 4.4.2 rom from sammobile.com? Were there errors in Odin?