AccuTracking

Then I think it's time to replace the phone.
Have you checked out our new starter kit?

Tried to reset phone, reinstalled software as before, worked for few minutes and invalid data message popped out again and it stopped sending.

Not yet. Try a factory reset to your phone and reinstall everything. WARNING: factory reset will wipe out all personal data on the phone including contacts and bookmarks.

Re-installed software, worked for about 20 minutes and stopped again with same INVALID DATA message. Does that means that phone needs to changed after it working properly for the last 8-9 months?

Your account appears fine. The phone app is corrupted and needs a reinstall.

It does go online, I downloaded accutracking software from your website.Tried google-works perfectly. My user is deivis7791

"INVALID DATA" error usually means the phone cannot connect to our server. Open the phone browser and see if you can connect to any website like google.com. Please email me your username so I can check your account settings as well.

Just started getting invalid data message on main accutracking screen and it just stopped sending signal. Tried to re-install software, changed tracker id number-no luck.