The past weeks have seen many flagship phones launch from major brands – from Samsung's S10 range to Nokia's 5-camera 9 PureView, to Motorola's tetra-set of Moto G7, Plus, Play and Power phones. All this is to say, if you've recently bought a new phone SIM-free you are probably looking to save on a new SIM.

Three Unlimited Data - £20/month

Three's 12 months Unlimited data SIM typically costs £27 per month. This includes unlimited text and minutes, as well and roaming around 71 countries. Argos, however, is offering the same SIM for £20 per month instead, saving you £7 per month. There is a £1 purchase price though. Get this deal from Argos.

Vodafone 100GB data - £13 per month

We also spotted this incredible offer from Vodafone via Mobiles.co.uk where you can pick up an unlimited text and minutes SIM with 100GB of data for £13 per month for 12 months. This is discounted from the usual £20 per month.

You also get £84 cashback which you can claim by mailing your bill to Cashback Claims, PO Box 376, Southampton, SO30 2PX. You must submit your bill on the 4th, 6th, 8th, 10th, and 12th month of the contract. You can also submit your bills online

vodafone 100gb sim cashback process

See our full round up of the best SIM-only deals of the month.