3 Internet APN Settings: Ultimate Guide (Updated)

 When I initially had problems with my mobile internet not working, I realised the necessity of APN settings. For 3internet customers, having the proper APN settings might be the difference between lightning-fast speeds and irritating connectivity issues.

This article is based on my own experience installing APN settings and debugging difficulties. It covers all you need to know about 3internet APN settings, including the basics, step-by-step instructions for Android and iOS, troubleshooting hints, and answers to frequently asked issues.

 3 Internet APN Settings

Setting	Value
APN Name	3internet
APN	3internet
Username	Not set or empty
Password	Not set or empty
MCC	234
MNC	20
Authentication Type	None
APN Type	default
APN Protocol	IPv4
APN Roaming Protocol	IPv4
Bearer	Unspecified

Different three.co.uk APN Internet Settings 

Setting	Value
APN Name	three.co.uk
APN	three.co.uk
Username	Not set or empty
Password	Not set or empty
MCC	234
MNC	20
Authentication Type	None
APN Type	default
APN Protocol	IPv4
APN Roaming Protocol	IPv4
Bearer	Unspecified

Advanced 3internet APN Config for Specific Devices

Setting	Value
APN Name	3 internet
APN	3 internet
Username	Not set or empty
Password	Not set or empty
MCC	234
MNC	20
Authentication Type	None
APN Type	default
APN Protocol	IPv4/IPv6
APN Roaming Protocol	IPv4/IPv6

Unique Fix	How I Discovered and Fixed the Issue
Switch the PDP Type to IPv4 Only.	I noticed a reduction in connection when using IPv4/IPv6. Switching the PDP type to IPv4-only in the APN settings improved the stability of my connection.
make use an Alternative APN	When 3internet proved problematic, I used three.co.uk as my APN.  To my surprise, it performed better in regions with lesser signals, particularly when streaming and browsing.
Disable Carrier-Grade NAT (CGNAT).	Using 3internet APN with a public IP resulted in sluggish performance in several applications. Moving to three.co.uk, which employs CGNAT, helped me enhance my connection in these scenarios.
Manually Configure DNS Settings	Automatic DNS wasn’t cutting it. I manually configured Google's DNS (8.8.8.8) in my phone's APN adjustments, which resolved difficulties with websites loading slowly or not at all.
Update Device Firmware	I was sceptical, however upgrading my phone's firmware addressed the compatibility issues with the 3internet APN. Following the upgrade, connections became quicker and more dependable. Automatic DNS wasn’t cutting it. I manually set Google's DNS (8.8.8.8) in the APN settings of my phone, It also resolved situations where websites would load slowly or not at all.
Test with a Different Device	To rule out hardware difficulties, I tried the SIM in a different phone. The internet worked perfectly there, Assisting me in determining that my device's settings need more modifications.

Each of these methods addresses distinct, non-obvious issues that may impact the 3internet APN. These strategies, ranging from tweaking DNS for quicker domain resolution to testing alternate APNs, assisted me in troubleshooting beyond the typical solutions.

1. Incorrect APN Details: Double-check every field for typos. A single error can disrupt the connection.
2. Restart Your Device: This typically allows the phone to recognise the changed settings.
3. Toggle Mobile Data: To refresh the connection, turn it off and back on.
4. Network Reset: Resetting your device's network settings sometimes help to address persistent difficulties.
5. Contact 3 Support: If none of the aforementioned solutions work, their crew is always willing to help.