Ask him to factory reset the phone and this should fix or remove any backdoor or spyware. Even if this doesn’t work ask your friend to take his/her phone to the service center and tell them to install a fresh copy of the ROM. This will certainly fix the issue and after that change all passwords.

Let me know if this helped you or not.

Good Luck!!

My friend’s has hacked her phone and had got all the messages and call details , even now he use to get statement regarding her call and messages, she can’t stop him from getting assess to her phone, please suggest any solution of how he wouldn’t be able to access all this data, I think he has installed any spy app on her phone , please help me sir

Hi Gitesh, looks like you are in some serious problem. Normally flashing the ROM with fresh one helps but in your case it didn’t. You have done everything I would have suggested. I will further research about this and will contact you for sure with a solution. Do you use the same email on your PC? If so then may be the hacker has access to your PC. Try making a new gmail id with a new phone number and before flashing change the IEMI number then flash. Till you don’t have a solution try using a different phone.

Good Luck!!

I am not able to figure out to how to resolve the issue.I took the phone to service centre but they also couldn’t find out the problem.

Mere phone ko mai 100 se zaada baar format kar chuka hu aur samsung ke service centre se use flash bhi karwa chuka hu.Uske bawajood wo baar baar hack ho raha hai.

Mai jese hi phone format kar ke naya sab kuch start karta hu aur gmail account banata hu to turant wo gmail account hack ho jaata hai.

Unknown device se mere account me sign in hota hai aur koi unknown device unknown location se mera phone number mere gmail account se connect kar deta hai.Mere contacts aur notes me bhi baar baar gadbad ho rahi hai.

My friend’s phone was hacked.The hacker is her bf.He can read every sms,whatsapp messages,can know who she(my friend the victim) is calling,has access to contacts,etc.So I told her to hard reset the phone.She did it.Everything went fine until she reinstalled True Caller App.Then again her bf(Hacker) has access to her phone again.He can read her whatsapp messages,Know who she is calling,know who she is sending to.fortunately he cant read sms but know whom she is sending to.Therefore I request you to solve this priblem.Hard Reset work for sometime but not 4 long when she installed true caller again.I think true caller is the main culprit.

You can try flashing a fresh copy of the ROM (Official). This will certainly remove any malicious file or any hidden back door. There are a lot of tutorials on the web for the same. You will have to root, install custom recovery and then flash the phone with fresh copy of ROM.

Hope it helps!!