# Designing for limited resources

Mobile devices are not constantly connected to power sources or networks by fixed lines. Wireless network connections can still be slower than cable connections. This affects response times when fetching data from Web sites.

Take the following issues and considerations into account when designing and developing applications for S60 devices:

- Using graphics and scripting effectively

- Keeping response times short

- Saving battery time

- Dealing with network issues

- Coping with the processing limits of the device

- Retrieving data