Yes, it is possible to contact your family during Short Manaslu Trek. For this, you may buy a Nepalese SIM Card in Kathmandu. Our Guide also has a cell phone, and the mobile phone will work for a few days begging of the trip and end of the trip, the reception covers some part of the trek as well. And the rests of the days there are landline Telephone service available, if you need to call your family, it is possible. We often communicate with our Guide about your trip. If you wish to update your message to your family and relatives, we at Nepal Mother House are happy to assist you to send them an email also. Now a day, most tea houses have internet Wi-Fi services also, and you can use the internet after paying some amount of money.