Built-in spring lock bracket fits 3. 5?? 4. 3?? 4. 7 and 5-inch screen GPS and smartphones and doubles as sun shade to avoid glare</br>Compatible smartphones includes but not l"ted to: iPhone 3GS 4S 5 Samsung Galaxy S3 S4 Mini Note 1 2 HTC ONE 4~5 inch Google Android Blackberry Nokia Windows 8 Smartphones</br>Compatible GPS includes but not limited to: Garmin Nova 40 42 44 50 52 54 255 13xx 1450 2