Seems like it could be my GPS. It was not sensitive at all when I was inside Liang Court, but it worked after I got on the bus.
Btw, some quick updates on the global developer rom 5.12.10. The whatsapp has been quite smooth not locking out. The reason why I am able to tell because I am on my laptop WhatsApp web at the same time and I barely see any disconnection.
I went to the service centre for my Miband problem. The CSO upon seeing my phone is on 5.12.10, he says this must be the problem because its beta. He encourages flashing sg rom 7.0.12.0. But I told him I was on China developer rom miui before the Miband stopped to record the stats back in Nov. No choice, he gives me Miband from behind (not sure new or refurbished) and says then I can take a replacement to test. Now I am charging it, hope the new dongle works...
As for the so called sg rom, I asked him where to download since its not in the miui website. No idea, may take months, may never upload...
What??????