Dropped my LG G2 now constant reboots topic

So i dropped my LG G2 a few days ago now i keep getting constant reboots, i opened it up and made sure all the connectors were secured in place yet i am still getting these constant reboots. What can i do as my warranty is now over and i cannot afford to get it repaired? (ive tried restoring, factory reset and most common things)

Constant Rebooting topic

First off, I apoligize if this has been mentioned before. I did do a search and looked at a few pages to find that this hasn't really been brought up much. Or at least not often or recently.

I have a M8 now, but I gave my old M7 to my dad whos been attempting to use it (and enjoyed it while it worked fine.) But now the phone will reboot itself almost every 10 minutes no matter what I do.
I have
- Unlocked the Bootloader
- Relocked Bootloader and ran an RUU
- Unlocked Bootloader and Installed Custom Rom (AHRD)

all of which have not fixed the constant reboot problem. I was wondering, could the issue involve the firmware of the phone? Or is it a hardware defect.

When I gave my dad the phone he had to take it to best buy to replace, assuming they gave him a refurb I am curious whether or not that could be an issue of a loose part as well.

I have not tried to install a nonsense ROM.

S4 I9500 Constant rebooting topic

Hi,

I have my S4 I9500 since 2013, a few weeks back i updated my phone from android 4.4.2 to the Russian android 5.0.1 firmware via odin.
Everything was working fine.

Today i tried to unlock my phone and the screen got stuck and it suddenly rebooted.

Since then it's is constantly rebooting.

it is powering up without even using the power button and i cannot power it off without removing the battery
And as soon as i put the battery it gets starts again with the boot-loop.

It stops at the samsung logo

Can anyone help me?

It doesn't even let me go into recovery mode, download mode