Use HTTPS with some phones
Using https://... rather than http://... is a better level of security: regardless of the network used (Wi-Fi, GPRS, 3G ...), the informations exchanged with the server (IDs, passwords, data ...) are not transmitted in clear.
To use HTTPS with your phone, may be you must install the root certificate in your mobile that it could communicate with Memotoo because it is not present by default.
So download the two certificate files:
https://www.geotrust.com/resources/root_certificates/certificates/Equifax_Secure_eBusiness_CA-1_DER.cer
https://www.geotrust.com/resources/root_certificates/certificates/Equifax_Secure_Certificate_Authority_DER.cer
Install it by opening the files on your mobile.
Now change the address with the HTTPS url for the synchronization with Memotoo:
https://sync.memotoo.com/syncml
2014-11-06: Memotoo updated SSL certificate to SHA-2 for better security
For old phones that can not support SHA-2, use this URL to connect to the old Memotoo SSL certificate:
https://sha1.memotoo.com/syncml
For Nokia phones, install file "networking_improvements.sis" to support SHA-2:
http://dl.nokia.com/ns/symfix/networking_improvements.SIS