Pick your Australia carrier
What is an APN?
An Access Point Name (APN) is the address your phone uses to connect to your carrier's mobile data network. When you insert a SIM card, your phone normally pulls APN settings automatically from the SIM profile. Manual APN configuration is needed when auto-detect fails — typically after a SIM swap between phones, after a factory reset, on imported (unlocked) phones, when using a prepaid travel SIM, or when troubleshooting "no internet" errors on mobile data despite a healthy 4G/5G signal.
Australia carrier quick reference
| Carrier | APN | MNC |
|---|---|---|
| iiNet | internet | — |
| Optus | internet | — |
| Telstra | internet | — |
| TPG | internet | — |
How Australia mobile carriers identify your SIM
Every Australia SIM card carries a PLMN (Public Land Mobile Network) identifier made of two parts: the MCC (Mobile Country Code), which is the same for all Australia carriers, plus the MNC (Mobile Network Code) which is unique per carrier. The MCC+MNC pair is how your phone knows which network the SIM belongs to. You normally never need to enter these by hand; they are listed on each carrier page for reference and for the rare dual-SIM scenarios where you need explicit network selection.
Common APN setup issues in Australia
- SIM works on one phone but not another. The new phone is using cached APN settings from a previous carrier. Open the APN list and delete unused entries before adding the Australia carrier's APN manually.
- iPhone "Cellular Data Network" menu hidden. Some Australia carriers ship locked SIM profiles that hide manual APN editing on iOS. Reset network settings (Settings → General → Transfer or Reset iPhone → Reset Network Settings) and let the carrier auto-config trigger when the SIM reinserts.
- Data shows "5G+" but pages do not load. Most often a DNS issue, not an APN issue. Force-switch to your carrier's DNS by clearing custom DNS in network settings, or test with public DNS like 1.1.1.1 or 8.8.8.8.
- MMS picture messages fail. MMS uses a separate APN configuration even when data works. On Android, add a second APN profile with APN type
mms. On iPhone, fill in the MMS section below Cellular Data in the same APN editor.