2. The Limit is 9 cm. So it can holder mostMobile phone , such as for iPhone 6S 6 Plus 5S 5C 5, 4S, 4, For iPod Touch Shuf fle Nano , For Samsung Galaxy S6 edge plus S6 S5, S4, S4 Mini, S3, S3 Mini, S2, Note 5 4 3 2, For HTC ONE M8 M7 Desire, LG G3 G2 Flex, Google Nexus 7, Nexus 10, Nexus 4, Nexus 5 etc.

3. You can use it to holder your phone when you use it. It is a cool gadgets for home for car for office.