How do I transfer all my contacts from HTC Wildfire to HTC One? My HTC Wildfire does not have an SD card. I am changing phones and providers, from HTC Wildfire on 3 Network to an HTC One on Vodafone. Please advise how I can transfer my contacts from my 3 Network sim card?
I will recommend you this HTC's official app.
https://play.google.com/store/apps/details?id=com.htc.dnatransfer.legacy