Help Wifi Not turning on - Android Q&A, Help & Troubleshooting

i need a big help my android phone is acting strange ever since i turned off my phone and turned it back on my phone got broken i think because i can't connect to wifi when pressing the wifi button it says turning on but suddenly turned off again tried soft format and hard format but still no luck tried different methods like putting a sim card on my phone but still no luck need help my phone is Pantech Sky Vega IM-A710K v.2.3.4 Gingerbread but before the problem happened my phone is working very well even without a sim card on it i can still use my phone's wifi need help any solution??? and i think my hard format is not 100% success because it says /system failed????

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[Q] Bad flashing - help appreciated

Hi, I would like to present a small riddle to you.
Today, one guy brought me Dell Streak and wanted my help. He tried to flash new firmware (dont know what way) but the Streak died in the middle of the process due to low battery. After that, only Dell logo was on the screen after power on, nothing else. So I tried the factory reset. Didnt work. Then I flashed the stock rom recovery (using fastboot) and after next factory reset, it was alive. The only problem is when the data packets (2G or 3G connection) are on. After booting right on the main screen, the Streak attempts to connect to 3G and in approximately 10 to 15 seconds it reboots and the same all over again. It happens even when the data packets are off and I turn them on. But when I keep the data packets disabled, the phone is working perfectly fine. Any suggestions how to fix this issue?
Some info:
I tried versions 351 and 360 from here but neither of them helped.
Well, first off the owner of the Streak is an idiot for not having it plugged in to the mains or at least having a fully charged battery before attempting to change the firmware. That said, given that a firmware update was interrupted, he may have no recourse but to contact Dell since the storage space for the firmware may well be permanently corrupted.
You can get a list of diagnostic tests by getting into fastboot and dialing *#301# on the fastboot keypad. Run the tests related to memory.
Well, i managed to make it work (android), so I doubt that memory is corrupted. Phone reboot if and only if I turn 2G/3G network on, otherwise it runs perfectly fine...
By the way, I ran 5 tests for memory and both the memory storages (internal and SD card) passed and are permanent write-nonprotection.

[HELP] Samsung Galaxy V No sim problem after reboot.

HI i'm Ivan Jurel San Jose (Newbie)
I had this problem about my sim card it wont read it and it says on the nontifications "NO SIM"
It Happened two days ago when i was playing games on Laptop i turn the Tethering or Portable Hotspot on my phone to connect and i turn off my phone when i finished using the internet i turn on my phone the screen wont on so i reboot after rebooting it says on my phone's Nontfication "NO Sim".
I searched in the internet nothing solved its about the software if the software wont working properly then the hardware wont
So please give me something to solved this problem
I've done many things to this phone it was very special to me and i rooted it by Kingoroot(Why is it easy on this its not challenging its recommended root for samsung phones)

Galaxy SIII GT-I9300 WIFI problem.

Hello,
Recently my s3 wifi has stopped working... it wont connect to any wifi and would simply "save" it but wont connect(it says connecting for a few seconds but doesnt connect). Ive had this phone quite a long time and ive rooted it and flashed roms a lot aswell but for six months or so i just flashed the samsung stock firmware for it and have been using it no problem bu suddenly it stopped working. i tried resetting, flashing ROMs, trying another stock firmware did te wifi power saving thing but it still doesnt work. What i saw was when i like reset the phone with the sim card installed the wifi wont work but when i reset the phone without the sim the wifi will work but when i insert the sim back again itll stop working again. i tried changing sims but still asme result. Any help would be appreciated.
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Encryption unsuccessful random! Need help. Galaxy S3 CM 12.1

Sup guys, so i just had a really strange problem that popped out randomly, i was watching a youtube video and i had to help a person quickly and when i came back just a minute later i saw my phone showing encryption unsuccessfull when i pressed the power button to turn my screen on. Well it said to factory reset my phone, i don't store any important data on my phone anyways so i just went for it, and it restarted went to my TWRP recovery and tried factory reseting it, to no success. It basically failed to access /data/ and other directories and i can't see any files in them through recovery. And so i can't even factory reset it, i can't install a ROM cause the partition is corrupt i assume. How can i "unbrick" this? I was running the good old Temaseks CM 12.1 ROM, has been working fine for a looong time. My PC recognizes the phone but i can't access any data, it just shows that it's connected, odin doesn't recognize it.
Can somebody help me please ? I use my phone alot and it's really important.

Poco f1 network problem

Hi all,
I am completely stuck with this, I couldnt get any wifi it wouldnt turn on and when I did it just turned off again. It also wont read my sim card and randomly restarts.
I tried factory resetting but its now just stuck getting me through the android setup and needs internet in order for me to register the account that I previously used on the phone, otherwise it wont let me pass. It wont turn on wifi still and still doesnt register my sim card.
Please help as I have been trying this for hours and Im honestly at the end of my rope.
Cheers,
Evan
update:
I have tried,
factory reset
Flashing the rom,
downgrading,
upgrading,
wiping everything and putting latest miui again,
used twrp for running a recovery.
None of this has worked - all came to the same problem
I face this problem also and i change poco f1 bettery with new bettery now everything is ok but bettery is very costly 3200 ruppes in mi service center

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