How to transfer contacts and calendar from Sigma Mobile S3500 3G to Microsoft Lumia 850
Transfer contacts and calendar from your Sigma Mobile S3500 3G to the cloud server
PhoneCopy.com is a web service which is free for personal purposes (with few limitations). This tutorial will show you how to backup your data from Sigma Mobile S3500 3G. The whole process can be completed in few minutes.
This guideline also works for similar devices like Sigma Mobile X-Style S3500 sKai.
If you already have a PhoneCopy account, fill in your password. To export your contacts, press "Synchronize". Then select synchronization direction between three options: From your DEVICE to server, From SERVER to your device or Combine both. If you are not sure, use Combine both.
Select "contacts" and/or "photos" and press Synchronize. At the end of synchronization you will see status of synchronized items. In the Settings, you can set "auto sync daily".
And now it's time to transfer data to your Microsoft Lumia 850
This guideline also works for similar devices like Microsoft Lumia 430, Microsoft Lumia 435, Microsoft Lumia 640, Microsoft Lumia 640 LTE, Microsoft Lumia 640 LTE DUAL SIM, Microsoft Lumia 640 XL, Microsoft Lumia 640 XL Dual SIM, Microsoft Lumia 640 XL Dual SIM LTE, Microsoft Lumia 640 XL LTE, Microsoft Lumia 735.
Now you have all your contacts backed up on PhoneCopy and you can edit all your contacts in your online account. If you lose your phone or the stored data, or if you just run out of battery, you can see your contacts online.
Some additional tips:
Just as a reminder, the contacts are transferred via your mobile phone service provider, so you need to have data plan activated for the service to work. If you don't have a special data scheme, your carrier will charge you additional fees.