Using the PhotosynQ app on Lenovo A516 (Android 4.2.2).
"Quick Measurement" --- all right.
"My Projects" - "Project" - "+Take Measurement " --- The loss of Wi-fi after few second.
Is the app stating that it is unable to connect? If this is the case, that means there is a problem with the bluetooth connection. The most common cause of this is low batteries in the MultispeQ. Are the battery's fully charged? If this does not solve the issue, try to unpair your device (in bluetooth settings on your mobile device) and then re-pair the device using the mobile app