H2O Wireless APN Settings
The H2O Wireless APN is prodata. Copy the values below into your phone's APN settings.
H2O Wireless internet & MMS settings
Tap any value to copy it straight to your clipboard.
How to enter APN settings
Open Access Point Names
Go to
Settings → Network & Internet → Mobile network → Access Point Names. On some phones it's underSettings → Connections → Mobile networks.Add a new APN
Tap + (or the menu → New APN) and set APN to
prodata. Fill any other non-blank values from the table above and leave the rest as default.Save and select it
Save from the menu, then select the new H2O Wireless APN and toggle Airplane Mode on for ten seconds so the change takes effect.
Open the APN screen
Tap
Settings → Cellular → Cellular Data Network. If you don't see this option, H2O Wireless locks APN editing, so contact them or install a carrier profile.Enter the APN
Under Cellular Data, set APN to
prodata. Leave Username and Password blank unless the table above lists them.Save and restart data
Go back to apply the change, then toggle Airplane Mode on for ten seconds so the iPhone re-registers with H2O Wireless.
Common issues
An old guide says att.mvno. That's an older H2O setting, with a Cingular MMS server. Current settings use PRODATA with AT&T's MMS server.
Picture messages won't send. Check the MMS proxy, proxy.mobile.att.net on port 80, as well as the MMSC, http://mmsc.mobile.att.net.
No data after moving from 3G. Customers coming from 3G need new data settings, either over the air or by hand. Enter PRODATA and restart.
Frequently asked questions
Do I need to enter H2O Wireless APN settings by hand?
Usually not. H2O Wireless runs on AT&T's network, and most phones pull the settings automatically. You enter them manually when data or MMS stops working, often after a SIM swap, a factory reset, or moving the SIM into an unlocked phone.
How do I know it worked?
Turn off Wi-Fi and open any website. If it loads, data is working. For MMS, send a photo to a friend and confirm it goes through. A quick restart helps if either doesn't start right away.
Does H2O Wireless support eSIM?
Yes. H2O Wireless supports eSIM. Activation usually sets up the data settings automatically, so you rarely touch the APN on an eSIM line.
Why won't my iPhone let me edit the APN?
Many carriers manage the iPhone APN through a hidden configuration profile, so the fields are locked or missing. That's normal. Resetting network settings re-pulls the profile and fixes most iPhone issues without manual entry.
These settings didn't fix it. What now?
Restart the phone first. If data still won't connect, reset network settings and let the carrier re-provision. If only MMS fails, re-check the MMSC and make sure mobile data is on. APN settings can't fix a deactivated line, an unpaid balance, or a locked phone.
