Follow up on support, check your warranty status or request a repair.
SIM cards have limited storage capacity and can only store one number per contact. To backup and sync your contacts we recommend that you use Contacts setup, a PC Companion application.
To transfer your contacts using a SIM card:
If needed, select what account the contacts should be created in and synchronised with, for example a Google™ account. If you save the contacts as Phone contacts, they will only be used in the phone and not be synchronised.