Mobile devices, mainly of the first generations are quite limited in speed and RAM. SelBuk has several alternatives to maintain speed and avoid sudden closures.
The format best suited for work product photos are images with .jpg extension to 80% of total quality. This will make downloads are faster and use less memory.
File > Csv & Images
Quantity of information
Users who engage in sales do not require having information from other vendors, but their own and probably will be the most ideal to limit the amount of orders to 1 week or 1 month.
SelBuk.com > Login > Account management > User / Password > Users & Devices > Access Level section.
Access Level > Sales record on device
Delete photos that are not already used
Occasionally uploaded photos that do not have any assigned product or products are completely discontinued, but still in the system.
Settings > Restore > Product image
Remove unused images