How do I fix a phone not booting after flashing a custom ROM?
Try flashing the ROM again.Make sure you are doing a clean flash.Always wipe system, data, cache and dalvik cache before flashing.This is very important.Dirty flashing often results in bootloop.If it still results in bootloop after a clean flash, then your firmware might be corrupted.Try flashing again using another zip package.Lastly, if you wish to return back to stock, you can either restore the Nandroid backup (if you have made one) or flash stock ROM.
Does rooting Android phones really void their warranty as everyone says? Can't we just unroot them?
It depends on different phone manufacturer's warranty policy. Of cause there are also some unroot tools to help you clean up the root access.In case you might have trouble in rooting and want to unroot to get everything back to normal.To make things earlier at that time, you can now search the internet to get known some tips about how to unroot your Android device.If your Android phone rooted by dr.fone, dr.fone can help you unroot it, so you won't lose the warranty whenever you need it.Step 1. To unroot your phone, select Root function and connect your Android phone to dr.fone. Then it will detect the device root status.Then click on the "Unroot" button to start unroot the phone. After a few seconds, your phone will be unrooted successfully.Or due to security reasons, there are a few apps that don't function properly on a rooted device.To overcome such an unwanted situation, you need to hide root access on your Android smartphone.Click this article for more steps to solve the hiding root access issue.
If I root my Android and then unroot it will the warranty be voided?
Thanks for A2A.If you unlock the bootloader you will void your warranty, if you flash your phone you "could" void your warranty, if you root your phone without unlocking the bootloader and without flashing there shouldn't be an issue as you can unroot your phone and the root access should be gone - your warranty is back!Also, as far as I concern, they(service center) don't have enough time to check for every single device if it was rooted once or not(specially if there is an hardware issue). I was having a rooted device and there was a problem related to display, they simply replaced my device with the new one and didn't check if it was rooted :)Hope this helped!
I am unable to write files to my USB OTG pen drive using my smartphone . What is the problem?
Sorry to hear this problem. Try the following,1. Go to settings>storage>unmount OTG, then mount the pen drive again. Now open file manager and try using pendrive.Follow the below steps too,1. Connect the flash drive with OTG cable to the phone2. Go to settings -> storage.3. Click Mount SD card under "USB Storage"Also note the fact that, normally this is related to the drive being formatted in a file system that is not compatible with Android. Android appears to only like FAT32 while most USB drives are formatted with exFAT or NTFS. If your device is Rooted you can use Chainfire's Stick Mount from the Play Store which can access the device with virtually any format.Otherwise, you will need to find a way to format it with FAT32. I had a 64GB dual USB OTG drive that would not work correctly until I was able to format in using (removed) to FAT32. Of course you will need access to a Rooted device to do this.Hope you understand the problem and fix it :)
How do I fix Error 7 in TWRP?
I don't think I've experienced this error before, but a guy on xda gives a reasonable explanation for ClockworkMod. I think CWM and TWRP mostly use the same error codes, but I'm not sure. Basically, that can happen when a) your system partition is messed up, or b) the ROM is supposed to be for a different phone.If your phone isn't bootable at the moment, I suggest wiping /system. This will nuke any OS you have on there, but it doesn't matter if it won't boot. After doing that, try installing Cyanogen Mod. If it still boots, I think the second issue is more likely.Every flashable zip has code in it that tells it what to install, among other things…such as what device it's for. If the package knows it's for a different device, it won't install (giving you error 7). In my experience, it usually gives you more info than just “error 7.” Something along the lines of “package is for hammerhead, device is bacon. INSTALLATION ABORTED" if I remember correctly. To fix this, you can take apart the package and change the device it's for. However, be absolutely sure you have the right package for your device. I flashed a slight regional variation on the wrong phone last week. Exact same hardware as far as I can tell, but different model codes. It booted, but the touchscreen didn't work. One small discrepancy could brick your device. If you wish to continue, see below. They put it better than I could.[FIX][SOLVED]Status 7 Error with CWM or TWRP Recovery on Rooted Android!Sorry I couldn't be of more help. Good luck to you!
My phone has a bug. How do I remove it?
if Google playstore is facing issues in your mobile then follow the necessary steps:step1:clear cache and clear data of playstore app.now check,if it didnt fix go to step 2.step2: uninstall both playstore and google play services updated apps and reinstall playstore and google play services from trusted sites or they will update automatically after uninstalling if you are connected to internet.also check if any system app is recently disabled by checking in the settings>manage apps tab.if problem is still not rectified go to step3step 3: reset your google account by performing factory/hard reset in your mobile.if still there is issue then last step should be followedlast step: a. backup all your contacts,pics,call logs etc using cm backup applicationb. if you want to backup your apps/game data also then install helium backup in both smartphone and pc,then connect to the pc then backup datac. install kingroot application and root your mobile in just one click.otherwise you can follow mobile specfic rooting method which is bit complex. later install clockworkmod recovery.d. now flash your stock rom after downloading your mobile specific package by entering into boot recovery mode.ultimately your problem will be fixed.