My z720 will no accept a new 8G 0r even a 4G memory card, in the past I have used and still use a 2G card and it works ok.

Are you sure it will accept a 4 G card (presumably you mean 4 GB) ? Some devices are limited in the capacity of the card they will accept.

Your new 4GB card is an SDHC card. The S700 works with MMC and SD cards. While SDHC cards will fit into the slot, they are electronically incompatible and will not work. You need to go with cards 2GB and smaller.

My problem is quite similar... My iphone works in some parts of delhi and it shows no service for other parts of delhi... If i use idea sim on my iphone, it works absolutely fine... and if i use my airtel sim on any other phone then also things appear ok..

any ideas?

The V3xx can accept up to 1G microSD cards, possibly a 2G card if you have the right firmware for it, but won't work with 4G or larger.

What size card are you trying to use? Mine works with 1G cards but doesn't recognize 2G cards.

Check out this link below to download a PDF manual, for your phone. Just copy and paste into your browser.

http://safemanuals.com/user-guide-instructions-owner-manual/SAMSUNG/SGH-L700-_E

You will have to delete some of you old messages. Why would you want to use up your memory card storing messages? Get a 1g, 2g or up 8g memory card. It will expand all memory. Maybe consider a new phone with more memory capacity. Look at this site for more Samsung support.

http://www.samsung.com/us/function/search/espsearchResult.do?keywords=709sc&input_keyword=709sc

Hope this helps, let me know if I can do anything else for you.
JimmyC

The Samsung Gravity doesn't support the Micro SD HC (High Capacity) cards, just the regular Micro SD cards. Yes, it sucks.

On the Sony website it says 4G is the maximum "capatible" size. However from my understanding about the description, 4G is the file size limit on the FAT32 format, the camera should be able to use 8G card. Puls 8G cards often provide higher speed. If you wanna be safe, use 4G, if capacity is an issue, use 8G

SD cards must be SD not SDHC, there is not an SDHC driver for the X5. You can find regular SD cards up to 4G.

CF is no problem, all flash based CF cards will work. Microdrives can be problematic.

i had the same problem, my 2 gb would work ok but not my 4gb i have heard that the 4gb wont work on the older r4's, so i bought a ds Lite R4 Revolution III (Version 3) from amazon.co.uk and it came with evrything you need and it worked great the address is https://www.amazon.co.uk/s/ref=nb_ss_w_h_/275-1618189-4849908?url=search-alias%3Daps&field-keywords=DS+Lite+R4+Revolution+III+%28Version+3%29&x=14&y=15

you bought a fake memory stick. return it.