Didnt see an existing thread on this; sorry if this is a repeat. By default the SF stores 200 texts per conversation and 20 multimedias per conversion. However, that value can in both cases be adjusted up to 5000. Might be excessive but here's how if you haven't already done it: Open Messaging App>Menu>Settings>Text Message Limit>Tap the number and put in 5000>Set and you're done. **If you put in a value greater than 5000 it still ends up as 5000; must be the limit** With 5000 thats gonna be some really long threads but oh well.