Replacement phone clamp for a mini camera tri-pod

Update 2018-02-25:
Broke the first print of this thing on my trip to Hong Kong. No surprise: The original had to be printed "standing", hence the hollow vertical pipes were too weak for horizontal forces.
=> I uploaded a new version (Replacement phone clamp_v2.stl) that can be printed lying on its back.
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This is a replacement for a phone clamp body that got broken in my cheapo mini-tripod.
(See http://www.dx.com/p/oumily-rotatable-mini-adjustable-retractable-tripod-holder-stand-for-ca