Originally Posted by BarryH_GEG

Mine picked up the APN from the SIM and they're slightly different than yours. Mine are in red.

Name: can be anything [MediaNet]
APN: wap.cingular
Proxy: leave blank [wireless.cingular.com]
Port: leave blank [80]
Username:WAP@CINGULARGPRS.COM
Password:CINGULAR1
Server: leave blank
MMSC: http://mmsc.cingular.com
MMS Proxy: wireless.cingular.com [66.209.11.32]
MMS Port: 80 [8080]
MMS protocol: WAP 2.0
MCC:310
MNC:410
APN Type: leave blank [.]

I have an LTE plan, and I was given these settings and they work fine. Odd. The SIM did it automatically, but I had an LTE phone before this.

Sent from my HTC One X

Originally Posted by mibikin

I have an LTE plan, and I was given these settings and they work fine. Odd. The SIM did it automatically, but I had an LTE phone before this.

Sent from my HTC One X

SIM's are serialized. You SIM's s/n is associated to your plan. The plan drives the SIM, not vice versa. Since you and I are on different plans it would make sense for us to use different APN's. A lot of people have issues when the s/n of the SIM they’re using isn’t provisioned correctly in their account. When everything works as it should you shouldn't need to change the APNs. The problem on the SGS3 forum is it doesn't work like it should. They also have a ton of issues with fast dormancy being enabled where we don’t. The cellular radio in the One X is the best I’ve ever used and I’ve used it overseas on about a dozen different networks now. I always had problems with my i9100 because no matter what APN settings I used it would sporadically screw up MMS and it sucked registering on foreign networks.

Got the AT&T MicroSIM, popped it in and it works fine
Had to discuss with the people at the AT&T store to get data but at the and they activated the data plan for me
They said the One X doesn't support data on the GoPhone PrePaid plans...

Really liking AT&T, it's HSPA+ coverage and the HSPA+ speeds. Much faster than my operator in Germany (it's the 2nd worst out of the 4 operators we have, gotta change soon).
Here in San Francisco I got 6.2Mbit/s down at 23:11 yesterday with the GoPhone 1GB Data Plan
Couldn't test in Vegas, these guys really didn't want to activate data and the Taxi waited outside so no time for long discussions, got data activated here in SF

Strange thing is that the Speedtest app doesn't work with the MediaNet APN.
Using the "phone" APN anyway to get full HSPA+ speeds and with that it works fine.
Another strange thing here is that I had to enter " phone" (with space) instead of "phone" for the APN to get an internet connection.

But now it works fine and I'm happy
Thanks for the help guys

I have the one x from gci Alaska, its quad core. I'm using it on AT&T but it only gets edge. Pls help.

Originally Posted by Jesushasadroid

I just got my HTC One X today. When i pop in the micro sim card, i could receive calls and text , but no data. Here's what work for me. I added a new apn....

Name: can be anything
APN: wap.cingular
Proxy: leave blank
Port: leave blank
Username:WAP@CINGULARGPRS.COM
Password:CINGULAR1
Server: leave blank
MMSC: http://mmsc.cingular.com
MMS Proxy: wireless.cingular.com
MMS Port: 80
MCC:310
MNC:410
APN Type: leave blank

That APN will restrict you to 7.5 Mbps even though your device supports 21 Mbps...

Hey i put a go-phone att sim with unlimited data for non-smartphones on unlocked htc one x. The settings does not work for me. Also my phone shows a 4g symbol beside the signal bar. Do i have to use different settings? Im new to these things, please help me out!

thanks,it worked for me.

---

I bought used HTC ONE X of ATT from local craiglist. I cut my regular sim into microSIM with blade(the guy who sold the phone to me left his SIM inside). it worked for voice and wifi. Not untill later I realized the data did not work although I am on prepaid plan with data.
I called ATT CS and Chated with online CS, THEY both told me this is 4G phone which will work for voice on prepaid plan.
my old HTC aria works on 3G. so I put that 3Gsetting into HTC ONE X named MediaNet(deault APN ATT will not connect, saying improper APN although there is a 4g bar). Then I searched your post. and made a little change. restart phone and phone is communicating, but data still not work. Then I log in my ATT account found that all my remaining data is GONE!!!!!(ATT CS already updated my IMEI earlier. they might just removed my data and don't want me to use).
I just bought another small data to see whether it will work. it worked.

many thanks! otherwise I have to go with T-mobile with slow speed. mine says 4G.

AGAIN #43 APN name is very important as previous post said.