After I updated to 6.1 I can not find caller ID on/off switch in settings
Settings > Phone > Show My Caller ID
There is no show my caller Id icon there is only My number , reply with messages and SIM PIN
Right. See ckuan's response. It addresses CDMA networks, which iis likely your situation. Contact your cellular carrier. Here's how:
Contact a mobile carrier
I've just rang them and they can not give me a answer
Did you speak to someone and they told you "I don't know"?
Did they not answer the phone?
Regardless, my recommendation is to keep trying. Someone there will eventually help you.
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