Tragedy struck unexpectedly a few days ago. My phone locked up and the only way to get it back to work was to format the the phone and start from scratch. I had my contacts backed up from a few months ago. When I tried to restore them, I believe they were read from a 00001.vcf file. Is this correct? Much to my displeasure, the contacts came back without all of their groups! We are talking a huge amount of work here. How do you save/back up you contacts WITH their assigned groups? Also, I found this file on my phone recently: contacts.json What is it, and will it have my phone contacts? Thanks in advance!