MetroPCS ZTE cannot connect to the carrier data network I recently had to factory reset my MetroPCS ZTE phone. Now when I put the SIM card in from my Huawei it won't connect to the carrier data network, it only works on WiFi.
Try going into Settings -&gt; Wireless &amp; Networks -&gt; Mobile Networks -&gt; APNs and make sure the MetroPCS APN is selected.

Here is what mine looks like (I am on t-mobile, which is why I have that selected). Your list may be different.

If this doesn't work, give MetroPCS a call and have them re-add the device to the network on their end.