PAC Code Transfer Guide

Switch from Chattr to Spusu and keep your number

Written by: SIM Only Finder Editorial Team

Last reviewed: 11th July 2026

Switch from Chattr to Spusu and keep your number

Written by: SIM Only Finder Editorial Team

Last reviewed: 11th July 2026

In this guide

Overview
Request a PAC code
Order a SIM only deal
Give the PAC code
Wait for the transfer

This guide explains how to switch from Chattr to Spusu and keep your mobile number.

Most number transfers complete within 1 to 2 working days once Spusu has your PAC code.

If you want a new number instead, text STAC to 75075 and give the code to Spusu.

This switch will take you from O2's network to EE's network. Coverage may differ in some areas. Check Spusu's coverage checker before switching.

Reviewed by Phil Brown · Founder, SIM Only Finder. Before launching SIM Only Finder, Phil worked in UK mobile retail at Three UK, advising customers on SIM plans, contracts, and network choices. He has spent over a decade running consumer comparison platforms and reviews networks and SIM-only deals based on that hands-on industry background. About SIM Only Finder

Last reviewed: 11th July 2026

Joining Spusu and leaving Chattr

Quick Network Switching Tool
Select which network you would like to switch from and to and we will give you precise instructions on how to keep your number when switching to a new SIM Only Deal.

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To keep your number, request a PAC code from Chattr and give it to Spusu.

You can usually give Spusu your PAC code when you order, or after your new SIM card or eSIM has been activated.

1. Request a PAC code from Chattr

Here is how to get your PAC (Porting Authorisation Code) from Chattr:

Text: Text "PAC" to 65075 from your Chattr phone. You will get a text back with your code within a minute. This is a free service from Ofcom (the UK's communications regulator).
Email: Email Chattr at hello@chattr.co.uk to request your PAC code.

Chattr is an online-only network with no stores or phone line.

2. Order a SIM only deal from Spusu

If you have not ordered yet, compare current Spusu SIM only deals below.

Spusu SIM or eSIM 1 month contract

1 GB Data

500 Minutes

500 Texts

Monthly £2.90

See Deal Sold by Spusu

Spusu SIM or eSIM 1 month contract

3 GB Data

500 Minutes

500 Texts

Monthly £3.90

See Deal Sold by Spusu

Spusu SIM or eSIM 1 month contract

5 GB Data

Unlimited Minutes

Unlimited Texts

Monthly £4.50

See Deal Sold by Spusu

If you already have your new SIM, continue to Step 3.

If Spusu asks for your PAC code during checkout, enter it there. If not, wait for your new SIM or eSIM to activate, then give Spusu the PAC code using the method below.

Spusu plans are rolling monthly only, so you are not locked into a contract.

Spusu does not run a credit check, so there is nothing to wait for during sign-up.

Spusu offers eSIMs, so you can switch without waiting for a physical SIM to arrive.

3. Give the PAC code to Spusu

Once you have your PAC code, here is how to give it to Spusu:

At checkout: Enter your PAC code when you order your Spusu SIM.
Email: If you have already ordered, there is no online form: email your PAC code and the number you are transferring to office@spusu.co.uk.

Spusu's service team works Monday to Friday 8am to 8pm and Saturday 9am to 5pm, excluding bank holidays.