Here’s a simple do-it-yourself tripod adapter for your smartphone.
A hard case designed specifically for your phone. Do not use a universal case which is designed to work with many different models. You need a snug fit.
A right angle bracket – preferably plastic but metal could also work. I repurposed a plastic piece from an old electronics box.
A 1/4"-20 free spinning washer nut.
Suitable adhesive (super glue, a high strength adhesive, etc.).
This tripod adapter is suitable for steadying your smartphone while taking pictures. Use common sense when using it and make sure that your phone won’t fall over or come out of its case. Do not use this as a stand for your phone.