Samsung Galaxy S5 G900F - How to Keep it safe & maitenance tips

[Kiriakos GR]

New interesting facts ... S5 G900F for Vodafone (Italy + Germany).

By owning now two of S5 G900F, its easy to spot details at European revisions.
My latest S5 G900F,  this has a factory touch-up for Vodafone.
I did upgrade the entire ROM to latest known for Cosmote my current mobile phone network.
Even so in the prone it is write protected content, of  Vodafone Apps.

In the positive side of things,  my new (used) device this does not have any SIM lock, or Network lock.
This it just needed a bit more time at configuring the phone, as I had to uninstall manually any Vodafone apps bloat.


This old ROM for S5 G900F for Vodafone (Italy + Germany).  
This hides a significant bug. 
Samsung keyboard,  this was unable to switch to Greek language, and or this accepts using Greek language on typing.
While user interface this was switched to GREECE.

The phone when fixed,  after of me deleting any stored languages prior be received by OTA upgrades.
Inside was files for:  EN UK and German language.
Samsung Keyboard system APP,  clean cache and stored files, this forced the APP, to load back all standard Samsung language files.

Now the Android operating system, this is back and in control of user settings and choices.
The phone become again UNIVERSAL for European networks SIM,  as it was written outside of original product packaging. 
   
About me, this time I had no control, of exterior looks of the phone that I got.
The seller listed it as in GOOD condition, but the previews actual owner he was a careless moron.

Lots of dirt at headphones jack.
Lots of dirt at  Card reader slot,  my SD card was unable to be read.
Lesser dirt over charging port ( after a deep clean I succeed USB 3.0 protocol this be functional)  = All electrical contacts be active. 

After deep clean : After cautious and patient work ..
Special chemicals + Special mini brushes
This phone returned to a fully functional state.   

I am currently perform battery charge and discharge cycles, so to verify newly purchased battery condition.