periodic disconnect when nRF52 central

[Mikhail]

Connect establish with smartfone in peripherial mode. SDK13. S132. Periodic I observe disconnect, than 2-3 advertise packet and new connect again. Where can I see what reason of those disconnect? And how to fix it?

[endnode]

Buy nRF51 DK (PCA10028). You can better reach optimal place when it is on USB cable, it also doesn't heat so much.