Sim empty - Samsung Galaxy J4+ Questions & Answers

Why my phone cannot detect sim after I flash a new rom?.

Try taking out the sim card when the phone is poweroff and then boot into twrp and go to advanced wipe-wipe system, cache,dalvik, and data. Now flash custom rom without gapps for first boot. Now reboot to recovery and flash gapps. IMPORTANT-dont flash gapps directly with rom! After gapps flash wipe dalvik cache and when the phone boot up. Reinsert the sim card. Should work. If you have any problems, contact me:fingers-crossed:

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[Q] Help please

Hello,
I wiped my internal storage with TWRP and after I try flash Dirty unicorn Rom and gapps. After booting where is black screen and I only can restart and shutdown phone. Also in internal storage only TWRP folder how to fix this please?
There is no need to wipe internal storage. TWRP tells you and double check with you that you want to do it. To should not jump into rooting and flashing with out a lot of reading. Go and read how to flash factory images via ADB
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Cict said:
Hello,
I wiped my internal storage with TWRP and after I try flash Dirty unicorn Rom and gapps. After booting where is black screen and I only can restart and shutdown phone. Also in internal storage only TWRP folder how to fix this please?
Click to expand...
Click to collapse
You must be on bootloop. Try wiping cache/dalvic cache through twrp.
If still it won't work, try clean flashing ROM. (After wiping android secure, system, data, cache, dalvic cache)
If you lost your recovery, then flash it again through fastboot.
Explore Below link, hope you'll get something that can work out.
http://forum.xda-developers.com/google-nexus-5/development
If you found this helpful, there's a thumbs up button (thanks button), just press it
Not trying to go over the previous posters but..
Cict said:
Hello,
I wiped my internal storage with TWRP and after I try flash Dirty unicorn Rom and gapps. After booting where is black screen and I only can restart and shutdown phone. Also in internal storage only TWRP folder how to fix this please?
Click to expand...
Click to collapse
"I wiped internal storage"; "Also in internal storage only TWRP folder" - To switch roms you only need to wipe data/factory reset in twrp, nothing else. Wiping internal storage deleted your personal data, which resides under /sdcard/. This is why you ended up with nothing (except TWRP folder, twrp creates that) under /sdcard/.
"and after I try flash Dirty unicorn Rom and gapps. After booting where is black screen" - A simple bootloop. Happened most likely because you didn't wipe data/factory reset. Another thing causing the bootloop might be gapps. Ever since PA Gapps went down, I've tried a couple of gapps packages, and at least one bootlooped on 5.1.1. If after reflashing your ROM and gapps after wipe data/factory reset in TWRP doesn't bring you Android UI, try wiping /system and JUST reflash the ROM, to see if it boots without gapps.
Also:
@zerosum0, please edit your post, statement "Go and read how to flash factory images via ADB" isn't accurate.
@hitman-xda, please edit your post, statement "If you lost your recovery, then flash ROM directly through computer" isn't entirely accurate. One way to put it would be "If you lost your recovery, then flash it again through fastboot". Although in this case, OP doesn't seem to have done anything to lose custom recovery.
If you're flashing the newer (5.1.1-based) DU ROM, make sure the GAPPS you flash is for 5.1 too... GAPPS for 5.0 won't work. (I use TBO GAPPS blacked-out and have had no problems.)

Bootlooping to recovery after flashing Custom rom

I unlocked my phone yesterday and installed orangefox recovery in it. However after flashing custom rom, it keeps rebooting back to recovery. Have no idea how to solve this. Any solutions?
hackmonker said:
I unlocked my phone yesterday and installed orangefox recovery in it. However after flashing custom rom, it keeps rebooting back to recovery. Have no idea how to solve this. Any solutions?
Click to expand...
Click to collapse
Try wiping data once and reboot to system
Nutya said:
Try wiping data once and reboot to system
Click to expand...
Click to collapse
Tried that. not working. Also if its relevent system, vendoe, etc are not mounted. only data, cache, and microsd is mounted. Have no idea why.
Me too faced this kind of issue, peter's TWRP worked for me, follow instructions from here
Ok It worked. No need to flash the dm Verity for orange recovery. What I did was simple.
1. Factory reset (Did this step before also)
2. Format Data (Also Did this step)
3. Flash rom (Of course did this too)
4. Then reboot to RECOVERY again, not to system. (did not do this step before). Go to reboot part and click reboot to recovery, not to system.
5. After that reboot to system and it should work. Mine did.
Solved
I to had same problem but mine worked after installing custom ROM install FCrypt disabler.zip from recovery then reboot and enjoy.
Download FCrypt disabler.zip for Redmi note 7 Pro from Google.
Flash any zip which disables dm verity things. Suggestion: flash lazyflasher zip.

Sim not detected.

Ok, I have Tmobile with android 10, unlocked sim, and unlocked bootloader. Then I installed Bliss rom and the only and main issue is that most of the time it doesn't detect my sim card. In the times where it did work I had cleared caches, reinstalled twrps, magisk, even dirty flash rom and gapps. It would work and then I would lose sim after a reboot. It did the same thing when i disabled the encryption. Can I get some help with this frustrating issue to make the SIM work after every reboot, to have it working all the time. Could it be tmobile apps or gapps. Thank you.
My sim not detected issue was because I didn't wipe data!
I solved this myself, yay me. No one said to wipe data.
my way
-format data by typing yes
-on slot A install rom, wipe data and cache/dalvik
-reboot and it should goto slot B
-wipe data, install nano gapps, wipe data, magisk, wipe cache/dalvik and data
-reboot into rom.
-you can also flash dm-verity last to turn off the encryption. I did this in an earlier flash session with maybe a different method but it stuck.
Its such a relief to reboot my phone and the sim is still there.

custom rom update

boot twrp
wipe system and dalvik
change slot
wipe system and dalvik
reboot recovery
flash rom
flash twrp installer
change slot
reboot recovery
flash gapps magisk etc.
reboot system
this method blongs to TogoFire

[Solved] Help to flash custom ROMs

Hello everybody,
I bought a Oneplus 7 Pro a few days ago and I'm preparing it for my daily usage. It's my fourth Android smartphone, and the third Oneplus. So far, I managed to flash everyone of them, with no major issues.
And then, the Oneplus 7 Pro suddenly appeared
I used this tutorial to unlock the bootloader and flash the custom recovery.
From my understanding, the custom recovery is flashed in the Recovery Ramdisk and available for both A & B slots.
For now, I have A and B slots with stock OSS, unlocked bootloader, custom recovery and Magisk. All of this is working.
There began my problems. I want to flash a custom ROM without Gapps and I fail to do it. All instructions around ROM threads seems different to me, I don't get the thing about A & B slots, when I flash one rom, it boots as usual on the stock ROM, if I flash both slots, It causes bootloops and if I manage to launch the recovery, my internal storage isn't detected and I can't restore any backup.
I already used MSMDownload to restore the phone completely once.
Can somebody explain to my dumb person how to do it proprely ? Thanks in advance ! :fingers-crossed:
TL;DR : I fail to flash a custom ROM and make it work.
Yes I had same issues when rooted, it means you lost root. You can try tool all in one to flash recovery and magesik via fastboot. If that doesn't restore your access, on twrp you will have to type in format, then mount, then add rom to storage(this method wipes everything beware)
djhulk2 said:
Yes I had same issues when rooted, it means you lost root. You can try tool all in one to flash recovery and magesik via fastboot. If that doesn't restore your access, on twrp you will have to type in format, then mount, then add rom to storage(this method wipes everything beware)
Click to expand...
Click to collapse
For now, my phone is working nicely. But that's the process of flashing a new ROM that fails. Recovery and Magisk are already and working.
Factory reset
Flash rom
Flash twrp installer
Reboot recovery
Format data
Reboot system
i boot all roms with these steps
WesTD said:
Factory reset
Flash rom
Flash twrp installer
Reboot recovery
Format data
Reboot system
i boot all roms with these steps
Click to expand...
Click to collapse
Thanks, I will try.
When you flash the ROM, does TWRP tell you that if you want to continue you need to reboot recovery ? If so, do you ? Do you reboot recovery on the same slot, or do you flash both ?
draentor said:
Thanks, I will try.
When you flash the ROM, does TWRP tell you that if you want to continue you need to reboot recovery ? If so, do you ? Do you reboot recovery on the same slot, or do you flash both ?
Click to expand...
Click to collapse
Nope, it doesnt tell you anything. Just reboot recovery from reboot menu. Don't touch the slot options
Thanks for your advices.
I'm trying right now, here's my steps :
- Wipe Data, Cache, Dalvik Cache (the standard Factory Reset)
- Install ROM : TWRP logs show that he's flashing on inactive slot A, then B. After that logs said " To flash additional zips, please reboot recovery to switch to the updated slot ". I'm going back on the menu
- Install TWRP Installer like previously
- Reboot Recovery : TWRP ask me if I want to install the TWRP App, I dismiss. After reboot of the recovery, it asks if I want to keep System Read Only, I swipe to allow modifications
- Wipe Data : Can't do it because TWRP is unable to mount storage. And after further investigations, I'm now on slot A, not B as before.
- Reboot recovery to slot B
- Wipe Data on slot B
- Reboot system
And It still booting on the stock Oxygen OS Rom, not the custom one installed before. I'm lost
The problem is that you are not performing factory reset.
Wipe data is not enough,you gotta go to wipe-format data-enter yes and swipe.
That is why you are getting bootloops and twrp unable to mount storage problem.
A/B is pretty simple.
You got two slots for many partitions like system vendor boot and all,but a single data partition.
Flash a rom from one slot,it always gets flashed to the other slot no matter what.So next time you reboot to recovery or system it's gonna be on the other slot.So here is the problem..one rom cannot decrypt data which was initially encrypted by another rom..so you gotta perform a data format instead of wipe.Thats it.
draentor said:
Thanks for your advices.
I'm trying right now, here's my steps :
- Wipe Data, Cache, Dalvik Cache (the standard Factory Reset)
- Install ROM : TWRP logs show that he's flashing on inactive slot A, then B. After that logs said " To flash additional zips, please reboot recovery to switch to the updated slot ". I'm going back on the menu
- Install TWRP Installer like previously
- Reboot Recovery : TWRP ask me if I want to install the TWRP App, I dismiss. After reboot of the recovery, it asks if I want to keep System Read Only, I swipe to allow modifications
- Wipe Data : Can't do it because TWRP is unable to mount storage. And after further investigations, I'm now on slot A, not B as before.
- Reboot recovery to slot B
- Wipe Data on slot B
- Reboot system
And It still booting on the stock Oxygen OS Rom, not the custom one installed before. I'm lost
Click to expand...
Click to collapse
lol i wrote all steps but you didn't do all of them. Use swipe to wipe for factory reset and you didn't format data
Joker123## said:
The problem is that you are not performing factory reset.
Wipe data is not enough,you gotta go to wipe-format data-enter yes and swipe.
That is why you are getting bootloops and twrp unable to mount storage problem.
A/B is pretty simple.
You got two slots for many partitions like system vendor boot and all,but a single data partition.
Flash a rom from one slot,it always gets flashed to the other slot no matter what.So next time you reboot to recovery or system it's gonna be on the other slot.So here is the problem..one rom cannot decrypt data which was initially encrypted by another rom..so you gotta perform a data format instead of wipe.Thats it.
Click to expand...
Click to collapse
Thanks for the explanation !
WesTD said:
lol i wrote all steps but you didn't do all of them. Use swipe to wipe for factory reset and you didn't format data
Click to expand...
Click to collapse
Well yes, I didn't understood the difference between Wipe and Format Data.
So let's resume :
Unlock Bootloader
Advanced -> Install Recovery Ramdisk : Install TWRP
Install -> Flash TWRP Installer
Install -> Flash Magisk
Reboot -> System : Reboot on stock OxygenOS Rooted
Then
Wipe -> Factory Reset : Wipe Data, Cache and Dalvik Cache, that means you just have to swipe on TWRP.
Install -> Flash ROM : Use the install function and install the ROM
Install -> Flash TWRP Installer : Don't reboot, go back and install as the previous step
Reboot -> Recovery : Reboot TWRP and it automatically load the other slot
Wipe -> Format Data : Click and type yes
Reboot -> System : Just reboot and it should load the installed ROM
is wiping internal storage compulsory?
aaryan45 said:
is wiping internal storage compulsory?
Click to expand...
Click to collapse
How would you do it ? This is an open discussion, I can't find one and only way of doing it
aaryan45 said:
is wiping internal storage compulsory?
Click to expand...
Click to collapse
Not wiping.. formatting..that is compulsory if your current data is encrypted
After multiple tries to verify the process :
Wipe -> Factory Reset + : Wipe Data, System, Cache and Dalvik Cache
Install -> Flash ROM : Use the install function and install the ROM
Install -> Flash TWRP Installer : Don't reboot, go back and install as the previous step
Reboot -> Recovery : Reboot TWRP and it automatically load the other slot
Wipe -> Format Data : Click and type yes
Reboot -> System : Just reboot and it should load the installed ROM
Install -> Magisk
Reboot -> System
Install -> Whathever you want
Reboot -> System
It worked !

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