About E-Sims & CustomRoms - Google Pixel 4a Questions & Answers

i need help with e-sims because i never used one. i want to know if it is safe to use e-sim if i change custom roms more often.
my questions are :-
-- if my bootloader is locked and i add an e-sim, will it remain even after unlocking the bootloader?
-- will it remain if i factoryReset or hardReset my phone?
-- will the esim remain if i clean flash another rom?
i have no idea how esim are stored in phone so i need some little help because if i reset my phone and my esim is gone i have to request a physical copy and convert that to esim every time i switch rom.

Even I have this question and looking for the answer

I can tell you my experience with an Esim and Sprint. First off with a custom rom like LineageOS it doesn't work with Sprint. BUT every time I did a factory reset or flash another rom or flash back to the factory rom my phone activated right away. Again this is only with Sprint so I can't say for other carriers. Only time I had an issue was when I purposely deleted the Esim but was able to activate it again with My Sprint App.

Related

Bypass Activation/ Unlock Cellphone: LG VS740

I got this phone, I'm not on the Verizon network as the phone is. Phone was working great w/ wifi bluetooth etc.... then I reset the phone back to factory defaults. Now it is asking to activate the phone etc... when I boot up the phone.
Some other people suggest that it is a mere process of tracking down the unlock codes.
wanted to know if there is anything else that comes to mind, like a new OS, boot loader or something?
Any help is appriciated
Guess nobody got any ideas of how I can use this phone as a PDA?
at the start up i get the android activation w/ verizon, which I would just like to bypass and use as a pda
I don't know that phone, but if it was already rooted & has a custom recovery image on it, try searching for a guide to installing a generic custom ROM via recovery. That /might/ avoid the registration step, if it was Verizon specific, rather than specific to the device model.
Why don't you want to use the device as a phone? Seems a shame not to.

[Q] Questions about unlocking, rooting and modems.

I'm sorry if this questions have been asked before. I read through many pages on the Q&A section of this phone and didn't come with clear answers to my questions.
This is the first time I will attempt to unlock, root and flash a ROM on an Android phone.
First of all, I've read and I still don't know if I can flash a custom ROM, or one of those Brazil/Orange JB images available and be able to have the phone unlocked to use with different carriers. Jelly Bean hasn't been released to this phone here in Mexico yet.
1.- I don't mind unlocking the bootloader with Motorola solution. Is this the best way to unlock it?
2.- Flashing a custom ROM or a stock one makes the phone unlocked so I can use it with different carriers?. If the answer is yes, what ROM do you recommend. Are those Brazil/Orange images good for any user or its better to stick with third-party ROMs?
3.- If the answer to number 2 is NO, what should I do in order to unlock the phone? I need to be able to use in Mexico (the phone if from Telcel) and also use it on the United States (with AT&T). I've read about modem files that had to do with carriers but I'm not sure if I need special files to unlock this phone? If this is needed, where do I start or where do I find this files?
4.- If there is something else I need to know (and I didn't asked here) about unlocking the phone and flashing a stock or third-party ROM and have it unlocked to work with other carriers, please let me know by replying.
What are you guys using to backup the factory image? I haven't fiddled with Android for a while after flashing a Kindle Fire many times. I got a Nexus 7 and I haven't needed to root, unlock or try third party ROMs. The last time I used TWRP to backup the image of the Kindle Fire I think.
Thanks in advance
ajua said:
I'm sorry if this questions have been asked before. I read through many pages on the Q&A section of this phone and didn't come with clear answers to my questions.
This is the first time I will attempt to unlock, root and flash a ROM on an Android phone.
First of all, I've read and I still don't know if I can flash a custom ROM, or one of those Brazil/Orange JB images available and be able to have the phone unlocked to use with different carriers. Jelly Bean hasn't been released to this phone here in Mexico yet.
1.- I don't mind unlocking the bootloader with Motorola solution. Is this the best way to unlock it?
2.- Flashing a custom ROM or a stock one makes the phone unlocked so I can use it with different carriers?. If the answer is yes, what ROM do you recommend. Are those Brazil/Orange images good for any user or its better to stick with third-party ROMs?
3.- If the answer to number 2 is NO, what should I do in order to unlock the phone? I need to be able to use in Mexico (the phone if from Telcel) and also use it on the United States (with AT&T). I've read about modem files that had to do with carriers but I'm not sure if I need special files to unlock this phone? If this is needed, where do I start or where do I find this files?
4.- If there is something else I need to know (and I didn't asked here) about unlocking the phone and flashing a stock or third-party ROM and have it unlocked to work with other carriers, please let me know by replying.
What are you guys using to backup the factory image? I haven't fiddled with Android for a while after flashing a Kindle Fire many times. I got a Nexus 7 and I haven't needed to root, unlock or try third party ROMs. The last time I used TWRP to backup the image of the Kindle Fire I think.
Thanks in advance
Click to expand...
Click to collapse
Unlocking BL doesn't change the unlocked status of the phone for carriers. If you want to unlock it to use with different carriers you'll have to pay the unlock fee to whoever you choose to unlock with.
1. Answered above.
2. Custom ROMs or ROMs from different carriers won't unlock the carrier.
3. I believe there is some sort of file modification to have it unlocked. Not sure what you have to do but if I remember correctly its risky and affects IMEI.
Sent from my RAZR HD XT925
saloums7 said:
Unlocking BL doesn't change the unlocked status of the phone for carriers. If you want to unlock it to use with different carriers you'll have to pay the unlock fee to whoever you choose to unlock with.
1. Answered above.
2. Custom ROMs or ROMs from different carriers won't unlock the carrier.
3. I believe there is some sort of file modification to have it unlocked. Not sure what you have to do but if I remember correctly its risky and affects IMEI.
Sent from my RAZR HD XT925
Click to expand...
Click to collapse
I know the bootloader won't change the locked status. As this is the first time flashing a phone, not a tablet, I thought that using a custom ROM or one from different carrier would work for this.
I've tried other SIMs on the phone (it's my sister's, not mine) but the phone didn't asks for a code when a SIM from a different carrier is inserted. I haven't bought any code because of this.
Anyone has a suggestion on what to do to have the phone unlocked to use with different carriers?

Tips: What is unlocking the phone?

Some people may have doubt about what is unlocking the phone. At first I mistakenly assume that Unlock is refer to unlock the phone screen. It's very clear now that it is not true.
Q: So what is unlocking the Phone?
A: There is a lock inside the phone that stop people from using the third-party system or what we said custom ROM. (Although many phones are using the Android OS, the system in different brands are not exactly the same. In order to keep the unified feelings of their brands, the manufacturers prevent users from using custom ROM. That’s why they set the lock. )
Q: What is the use of unlock?
A: You can use custom ROM after unlock.
Q: Will it brick the phone if unlock failed?
A: Unlock failed has no effect on the phone. If there are some problems during the unlocking process, just take out the battery and restart your phone.
All of these statements are based on personal experience, if wrong, please specify, thank you for your read.
Purpose of unlocking the phone is to use it on another network
markdc said:
Purpose of unlocking the phone is to use it on another network
Click to expand...
Click to collapse
:good:Thank you for your add
Most of the time when it's unlock you can use it with many different carriers check GSM and non GSM carriers, Carriers like verizon, sprint have there own bootloader (Brand Image upon starting) and a secure stock rom. So it somewhat difficult to root there devices, Like my verizon S6 I've been waiting since the OTA update.
-AndroidPhreak.com

Custom Rom causing phone not to recognize new sim?

I am currently switching our Cricket phones over to Tracfone with their BYOP kits. My daughters' phones are both stock and their phones immediately recognized the new sim. (However, their phones are LG Risio)
My phone has AlexOS 5.0, after trying unsuccessfully the first time to get it to recognize Tracfone's sim, I did factory reset from TWRP. Still no luck.
Do I need to flash back to stock? If so where can I get it?
Also, if stock is currently only on 5.x can that even be flashed over 6.x (downgraded)?
Thanks
ETA - Checked sim card in other phone and it is fine. So it's definitely my phone.
Looks like maybe Mobile Upgrade Q is the answer? Would that make me lose TWRP?
If you update using Mobile Upgrade, you'll lose root, TWRP, and go back to stock.
Does the Idol 3 need to be network unlocked in order to work with Tracfone?
I think so, we have the unlock code directly from Cricket. The problem is that the phone simply says "No Sim" with the Tracfone sim, the others phones immediately asked for an unlock code after switching sims.
Try a different sim card in the phone to see if the phone prompt's for the unlock code? If not prompted, the phone may have to be flashed back to stock.

Flash Tmobile FW onto ATT GS7

I have the latest firmware from SamMobile and Odin 3.12. I also see the video tutorials on youtube on how to use those 2 items to get the flash done. Question, I will be switching carriers at the same time of my flash. I do not need to unlock the phone from ATT before the flash, do I? I thought that that phone unlocks were only needed when keeping the same load on your phone, while switching carriers?
You can't really mess this up, can you? In other words, of something doesn't work before the flash starts loading, you can keep troubleshooting it. Once the flash starts, that basically means you go it, correct?
Are there any other items I'll need or things to do before I flash the Tmobile FW onto my ATT GS7?
If the phone is carrier locked you won't be able to use it with another SIM until unlocking it, regardless of firmware. I assume you've already tried it with the T-Mobile SIM?

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