Some people found their iPhone won’t sync contacts after iOS 1.3 upgrade, this is an common issue on iPhone and most previous iOS system also have same problems. Normally, it’s for networking conditions are not very good, in my opinion, the problem is almost always with iOS. Here you can follow my tutorials to locate what is the problems and how to solve it.
To get start, you can create a test contact in your iPhone, it will automatically backup to iCloud if you are using WiFi. With cellular connecting, please open Contacts app and drag down the contacts list to refresh it. Then login your iCloud account via web, if you cannot find the newly created contact, that’s the problem.
1. Easy Steps to Fix iPhone Contacts Won’t Sync
Step 2:Tap on iCloud, toggle the switch button off behind Contacts to turn off the automatical backup with iCloud, then choose “Delete from My iPhone” to continue. Now open the Contacts app, all contacts will be deleted from your iPhone. Just take it easy.
Step 3:Now go back to iCloud and toggle Contacts switch on. All contacts will download to your iPhone with seconds. The contacts won’t sync problem solved.
2. Get Back Contacts from iPhone, iTunes or iCloud backup file with UltData
If you cannot find some contacts or mistakenly delete it, here you can use a powerful tool – UltData to get back your contacts.
Step 1:Download and install UltData into any available computer or mac and install it.
Step 3:Wait for a couple of minutes for the procedure completed. Click on “Contacts” in left channel, you will see all contacts list out. Click on “Show Only Deleted” option, you will filter all deleted contacts in your iPhone.
If You cannot find the contacts information you needed, you can choose other 2 options to get back your lost data from previous iTunes backup files or iCloud backup. With UltData, You can easily import and export all your contacts.