Pocket Tripod
The Pocket Tripod PROv2 folds to the size of a credit card, about two credit cards thick, and lives in your wallet. Unfold it in a few seconds and it holds any iPhone or Android at any angle up to 105 degrees, bare or in a case.
Each kit comes with interchangeable Adapters sized to your phone's thickness. Standard Fit suits most phones in a case; Slim Fit is for thin phones and foldables.