Follow Pay As You Go topping up (adding credit) As a Pay As You Go customer, you need to top up your phone with credit before you use it, here are the options for toppingup If you need to check your balance (how much credit you have left) first dial *#100# and click the call button The balance will be displayed in a message on the screen TopThere are 3 main SMS services that you can use Balance, PIN & Top up SMS services aren't available across all our programmes and you will need to verify your mobile number before using Once set up, make sure you save to your phone contacts so you have it to hand when you need it Then simplyTop – Up Sainsbury’s physical Gift Cards can have additional funds loaded up to the value of £750 at checkouts instore Balance Check The best way to check your balance would be to register your card as detailed above However, there are some option options available to you If your physical Gift Card has a QR code on the back of the card, you can scan this Q...