I use a bike mount i made myself by using an unused flashlight mount and an old but tough phone cover and glue gunned them both together lol... It doesn't look classy at all haha but as long as it works...
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Phone : Xperia Z1
Rom : Stock and De-bloated and De-odexed.108
Kernel : Stock
Baseband : IDK
Bootloader: : Locked
Root : Yes
Mods : Stereo Speakers, 4K and Timeshift port, Xposed.

Secondary phone : Xperia Arc S
Rom : CM10.2 Lastest
Kernel : From zip
Baseband : 64
Bootloader : Unlocked
Root : Yes
Mods : None

Stock Roms always work best