This is a limitation inherent to Windows Phone 7.x devices, for example, Lumia 800. The Windows Phone 7 platform is capable of transferring only 500 messages.
- How can I transfer my phone data onto my new Lumia phone?
- Which languages does Cortana support?
- I cannot download or get application updates when first starting the Store app on my Lumia. How can I resolve this issue?
- I have forgotten my Nokia account password
- Where can I find info about the amount of memory on my Lumia?