A week ago the power button on my Nexus 5 got stuck. I would press the power button and the phone would behave as if I was holding down the button even though I wasn't. I watched some teardown videos on YouTube and opened up the phone, took out the motherboard and gently squeezed the power button connectors on the board. This seemed to have worked because the button is no longer stuck and the phone is working. However, I have not observed the H indicator on the signal icon since then, only the E. It doesn't matter what I set the preferred network type to and I know there is HSPA+ coverage in the area. Is it possible I damaged or disconnected an antenna when I opened the phone? I have noticed no other issues. EDGE is working as well as can be expected.