Buyers Guides
WhatSIM Blog and Buyers Guides
WhatSIM is here to help you navigate the complicated world of Mobile phones and SIM contracts. Check out the latest technology news and how to guides for all the UK mobile networks and phones from leading brands like Apple, Samsung, Huawei & Oneplus.
Out top SIM Only contracts help you save money and get connected quickly and easily. We search the entire market to help you find the best value SIMO deals.
How to monitor and reduce your mobile data usage
Our need for mobile internet has grown with the advancements in smartphone technology and, where before you would pay a higher price for calls and texts, data is now the most expensive part of a ...
Switching from PAYG to Pay Monthly – use, lose or transfer?
Do you want to upgrade from a Pay As You Go plan to a Pay Monthly contract, but worry that you’ll lose the remaining credit on your PAYG SIM?
If you’re transferring from a PAYG plan to a Pay ...
How to port your mobile telephone number
Porting is the process of transferring your existing mobile phone number to your new contract on a different network. This works the same with SIM only contracts as it is with any other contract, so ...
How to unlock your mobile phone
Unlocking your mobile phone
When you buy a phone there is a good chance it will be locked to the network provider you purchased it from. This is done to stop you from switching networks easily. ...
Which SIM card do I need?
SIM cards come in three sizes - here is a quick guide on how to tell the difference and what to look out for.
Choosing the right SIM only deal for you
If you are new to SIM-only, or you want to make sure you get the best deal for you, then we’re here to help you navigate step by step all of the big decisions you face when choosing your SIM-only ...
Are sneaky text messages costing you more?
Most of us have at some point or another experienced bill shock, and MMS, or picture messages are a common reason.
When you add emoticons, little smiley faces and the like to your text messages they ...
When will I get 5G?
The 5G rollout started in late 2019 and is already bringing faster connection speeds to thousands of happy phone users across the UK but if it's not yet available where you are you'd would be ...
Why mobile phone credit checks needn’t be a barrier
Most networks require a credit check before they will sell you a mobile phone contract; particularly if it comes with a premium smartphone. This can be a barrier if you have a poor credit score, ...
Tethering: which mobile network is best?
What is mobile tethering?Tethering allows you to use your phone as a portable WiFi hotspot by connecting your mobile phone to another device, such as a laptop or tablet. This can be especially useful ...
The Definitive Guide to SIM Only
What is a SIM-only contract?
SIM-only contracts work in the same way as traditional mobile phone contracts except for one distinct factor; you provide the mobile phone. This means all you pay for is ...