You dont know what is apn? Really not have or have signal is apn? Stupid idea. Please learn and write again.Recheck your apn settings. Works fine on me.
You copy and paste strupid things about apn. You can delete apn and You will be have signal too.
Now i delete apns and have signal and can call and send sms.
Apn is access for mobile internet and accsss to channel to send mms. Nothing to do with signal...
Learn what is apn and please stop wroting not true things
Access Point Name - Wikipedia
en.wikipedia.org
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