A Redmi smartphone with model number 220733SL has been spotted on the US FCC database. The handset is said to be the Redmi A1. It is tipped to be a budget smartphone, and could be powered by a MediaTek Helio A22 SoC. The company is yet to announce any details regarding the phone, which has also been spotted on the Geekbench benchmarking website that suggests that it c…