| Most PDAs and smartphones use storage cards to | | | | used in micro SD cards as all new devices have now |
| store user data. Most common types of storage | | | | micro SD slot. SDHC standard supports up to 32 GB |
| cards are MMC (Multimedia Card), Memory Stick Duo | | | | of data storage. That corresponds to 50 hours of |
| (used in Sony Ericsson phones) and SD (Secure | | | | high quality music - quite impressive!. However, they |
| Digital). Now most phones implement micro SD (older | | | | do not work on older phone models. The reason is |
| models use mini SD) which are just smaller versions | | | | not because of the standard itself (even if your |
| of the same SD standard. | | | | device has a mini SD slot, you can use a micro SD |
| Mini and micro SD standard supports cards with | | | | card in it with a mini SD adaptor) but because the |
| capacity up to 2 GB. To increase the capacity, an | | | | older versions of Windows Mobile do not support |
| extension of this standard called SDHC (SD High | | | | SDHC. Only Windows Mobile 6.1 and higher has an |
| Capacity) was recently developed. This standard is | | | | SDHC support. |