I wanted to use this phone as the data only device. I changed APN setting to AT&T Broadband, but I only get HSPA or HSPA+. The Sim has been used with the LTE hotspot device without any problems and it still works fine.
According to the forum, many people had reported that AT&T's system has a problem with this phone since it recognize Xperia Z3c as 2G phone, so they couldn't get LTE.
Some people managed to resolve this problem by telling to AT&T previous LTE phone IMEI, but I can't do that because of this iPad Unlimited Data Sim.
I know my case is really rare, but any advice will help.
Thank you in advance.
According to the forum, many people had reported that AT&T's system has a problem with this phone since it recognize Xperia Z3c as 2G phone, so they couldn't get LTE.
Some people managed to resolve this problem by telling to AT&T previous LTE phone IMEI, but I can't do that because of this iPad Unlimited Data Sim.
I know my case is really rare, but any advice will help.
Thank you in advance.
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