galaxy S4 samsung GT - i9505 Androïd 4.4.2 rooted Here my problem; The contact list of my phone is being stuck on Updating or Unfortunately contacts has stopped. So I have tried many things such as: - rebooting - clearing cache and data of Contacts in App information - boot in safe mode - wipe cache partition - and eventually I have done an hard reset but it didn't solve this problem. There may be a Sync problem as when I want to Sync I get the message "sync is currently experiencing problems." So I have deleted and installed again my Google account but the sync problem is still there. (and on my account whatsapp it's written "Sync turned off" and I don't see a way to turn it on.. I have cleared cache and data for: Google google account manager google calendar sync google contact sync I have pulled the battery for about 10mn and then back. It didn't change anything L I have reinstalled Whatsapp too (with the same phone number), but after entering my phone number Whatsapp asks for my name and become stuck at Reinitializing with the messages "Unable to connect" and "Whatsapp service is operating normally" when I press the Check status button. Turning Sync off ot pressing Sync all has no effect. Please could you tell me what I should do to to solve this situation?