This is a phone holder I designed in a past year. There are V1 and V2 models, use which one you like most. V2 uses thinner walls and a bit bigger, also it can be used for 2 phones at the same time, but it takes a bit more space on a table. Both models can be printed without any supports in PLA, although if your printed can't handle these angles, you can add supports for the legs (this might be useful to avoid legs warping, which makes a bit less stable on a table).