Many mobile phones are equipped with memory card slots that can accommodate more files in the phone's memory. However, when choosing a memory card you must test for normal operation on your phone, as some of them having large amounts of memory can cause "glitches" in the phone. In some cases confusion when a file is opened may be caused by the fact that it is on the memory card. In this case, you must either have patience, or in advance to transfer it to the memory of the phone.With a crowded memory messages or address books you can stolknutsya with inhibition of operation of the phone when trying to open messages or phonebook. In this case, you must sync your phone to the computer and clear the memory from unnecessary messages, and also copy to a computer address book, then delete the least-frequently-used contacts from the memory of the phone. This will provide a more stable operation of the phone, retaining all the important information in his memory. The slow response of the phone for queries can also be caused by factory defect of the firmware, which emerged only with time. In this case, you will need to synchronize your phone with further flashing. The necessary components, namely, usb cable and CD with drivers, you'll be able to find in a complete set of apparatus or to buy them in the shop of cellular communication. Otherwise, you can use any cable with a connector appropriate for your phone and also the driver, which you can download from the official website of the device manufacturer. Use fan sites as samsung-gun.ru to download firmware, as well as special software for flashing phone. Reflash the phone, saving all your personal data and an original version of the firmware.