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O2 APN Settings iPhone 16

📅 Last updated: 17 May 2026

O2 APN Settings iPhone 16 guide with steps, settings, troubleshooting, FAQs and related UK mobile network fixes.

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O2 APN Settings iPhone 16 | UK Mobile Guide — UK APN Hub guide O2 APN Settings iPhone 16

Quick setup summary on O2

Publishing order: 454 • Cluster 40: Device and Network SEO

Many users face connection issues because of incorrect network settings. This O2 APN Settings iPhone 16 | UK Mobile Guide tutorial explains the proper configuration step by step.

Use this guide to fix setup problems, mobile data issues, signal problems and UK mobile network settings with clear steps and related guides.

If your phone shows no service, slow mobile internet, hotspot issues, a blocked SIM, roaming failure or an APN problem, start with the steps below before changing advanced settings.

Restart your phone and wait for the mobile network to reconnect.

Check that your SIM settings, cellular data and roaming settings are correct for your plan.

Open mobile internet settings and confirm the APN configuration has not been removed or saved incorrectly.

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Troubleshooting — Try Steps in This Exact Order STEP 1 Toggle Aeroplane Mode STEP 2 Full Restart your phone STEP 3 Delete & re-enter APN from scratch STEP 4 Reset Network Settings ⚠ STEP 5 Contact Network Support ⚠ Step 4 (Reset Network Settings) will delete: • All saved Wi-Fi passwords • All Bluetooth pairings and VPN configurations Note your Wi-Fi passwords before using this step. 💡 Most issues are caused by: • Wrong APN text (one typo stops everything) • APN saved but not selected (no filled circle) • Phone not restarted / aeroplane mode not toggled

Follow these steps in order — most issues are resolved by step 1 or 2

Recommended setup checks on O2

Setting Value
APN Namemobile.o2.co.uk
Usernamevertigo
Passwordpassword
MMSChttp://mmsc.mms.o2.co.uk:8002
MMS Proxy82.132.254.1
MMS Port8080
Authentication TypePAP
APN Typedefault,supl,mms

Open your phone settings, select Mobile Network or Cellular Data, then review the APN profile. Save the settings, restart your device and test browsing, picture messages and hotspot if your plan supports it.

Internal guides to check next

For stronger results, follow the network hub first, then continue through APN, MMS, eSIM, roaming and fix guides. This structure helps users and search engines understand the full topic clearly.

UK APN SettingsTroubleshootingO2 APN SettingsO2 APN Settings iPhoneO2 APN Settings AndroidO2 APN Settings SamsungO2 APN Settings iPhone 16Why Is My Mobile Data Not WorkingHow to Reset APN SettingsWhat Are APN Settings
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Frequently Asked Questions

What is the O2 APN name?

The O2 APN name is shown in the settings table above. On most O2 SIMs in the UK, the APN is pre-configured automatically when you insert your SIM.

Why is my O2 mobile data not working after entering the APN?

After entering the O2 APN settings, restart your phone to apply the changes. If data still does not work, check you have selected the correct APN and that your O2 plan includes mobile data.

Do I need to enter APN settings manually on O2?

Most O2 devices configure APN settings automatically when you insert your SIM. You only need to enter them manually if your internet or MMS stops working after a factory reset or SIM swap.

What is the O2 MMS APN for picture messages?

The O2 MMS APN settings are included in the table above. Make sure the MMSC, MMS Proxy and MMS Port values are entered exactly as shown.

Can I use the same APN settings for 4G and 5G on O2?

Yes, the O2 APN settings work for both 4G and 5G connections. You do not need a separate APN for 5G — the network upgrades automatically where 5G coverage is available.