Sure, they’re cheap, but they’re cheap for a reason. Dishonourable mentions go to Vodafone and Nokia. Both brands make phones that break often and have low user satisfaction.
We tested three Vodafone devices and all three returned poor results.
We tested 15 different Nokia phones and can confirm that none performed particularly well (which is a shame, because Nokia has good environmental credentials).
If you’re looking for a phone that works well without costing the earth, we recommend buying a slightly older refurbished mid-range model from another brand and avoiding a new Vodafone or Nokia at all costs.