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I presume you are capturing this on the wired network and your phone is on WiFi. It looks to me that your WiFi network has a poor physical layer connection to your phone. You can see phone initiated the session (SYN flag) at frames 3,5,7, and 14. For each one your server ACKnowldges (SYN/ACK). The SYNs are coming in at increasing inter. Between the SYN at frame 8 and 14 there are 3 SYNACKs from your server that don't seem to be heard.
Try moving your WiFi to another channel as your probably are getting a lot of interference.
Basically TCP is doing it's job from what I can see
