A mobile phone card reader pairs by Bluetooth to a phone or tablet and uses its connection. It is the cheapest way into card acceptance, published from 11 pounds plus VAT, and it inherits every problem the phone has: signal, battery, and the fact that most phones only hold one pairing at a time.
Pairing, and why two staff need two readers
Most Bluetooth readers hold a single pairing. Swapping between two staff phones means unpairing and repairing, which is unworkable at a counter. If two people take payments, plan for two readers or one shared device. This is the practical constraint that pushes growing businesses onto standalone terminals more often than the rate does.
What to compare on
Transactions on a full charge rather than standby hours; whether the reader has its own keypad or relies on the phone; how quickly it reconnects after sleeping; and the account rate behind it. Published rates on this shelf run from 0.79% to 1.75%, which is a bigger number over a year than any difference between two readers.
When to stop using a phone reader
When you lose a sale because the phone had no signal, when staff need to take payments without the owner's phone, or when the machine has to be handed to a customer in the rain. At that point a standalone terminal from 39 pounds excluding VAT solves all three, and the cost is trivial against what a lost job is worth.
Questions people ask about mobile phone card reader
What is the best mobile card reader for a small business?
For counter use, the cheapest reader on the best account rate, because the phone is always to hand. For work away from a counter, a standalone terminal with its own SIM rather than a phone paired reader.
Can two people share one card reader?
Rarely in practice. Most Bluetooth readers hold one pairing at a time, so two staff on separate phones need two readers.
Do phone readers work without signal?
No. They rely on the paired phone's connection. A terminal with its own SIM is the answer where coverage is unreliable.