is it the dual shot shell?

So weird that when I turn on battery saver my WiFi automatically switched off. I tried switching it back on, but after connected for 1 or 2 seconds the WiFi switched off again. Is it just me because I never observe this problem before the firmware update

my 620 survived a heavy downpour just now..
the outer shell and screens are all covered with rain but the inner compartment is still dry like summer =D

where can i get cheap ori powerbank? not the oem or ap or replica one

will 620 be eligible for future OS updates? like those in 2014 ones

every time i restart the phone the phone will say there is a problem on the sd card bla bla, insert it to computer to fix it, whats the problem behind? i had reformat it once before i use the sd card

hello, can i use 2A power bank output to charge this 620?

the power bank says 2.1 A can be used for 5V devices. so 620 is not 5V? i'm not so good in this kind of stuffs

Hello, where can i get the exchangeable shells? i tried to search at lelong but all are casing.
the shell i meant is the one that covers the batt and memory slot, built in with nfc and is part of the earphone jack connector(?), not sure if i got the term correct.