how do i stop downloed jar invalid appearing when i try downloading ?

restore my mobile?

How to fix my Samsung galaxy s3 phone?

Samsung Mobile?

Samsung curve?

Samsung Galaxy Ace plus is using internet but how?

phone works with head set but when i use the phone with out the head set i ?

How to tether my s20 plus pro to my pc with usb?

Samsung A3?

I am looking to switch on my Samsung mobile after a few months Can you help?

samsung gt-s5230?

unlock?

How to improve internal memory?