LG

I've learned that MY phone the Slider LG LG290C is the same exact phone as the one SPRINT carries called the SLIDER LG LX290

I added links to BOTH the SPRINT and STRIAGHT TALK cell phones.
(SPRINT):
http://nextelonline.nextel.com/NASApp/onlinestore/en/Action/SubmitRegionAction?isUpgradePathForCoverage=false&currZipCode=&upgradeOption=&nextPage=DisplayPhones&equipmentSKUurlPart=%3FcurrentPage%3DphonePage&filterStringParamName=&newZipCode=06330
(Straight Talk):
http://tracfone.deviceanywhere.com/straighttalk/home.seam?deviceId=639

The only difference between the two is the color,price and carrier. THAT'S IT!.OH, not to mention the fact that you're under contract with Sprint and NOT Straight Talk!

ALL of the accessories that fit the SPRINT LX290 will IN FACT fit your STRAIGHT TALK SLIDER LG LG290C CELL PHONE!, INCLUDING THE BATTERY!!..

These two phone are identical to each other, the dimensions are very close to each other, and use the same 900mAh battery(STANDARD) that comes with it.

I just purchased a HOT pink HARD rubberized case from http://www.accessorygeeks.com/ for a little bit over $9 for the LX290 phone and it fits PERFECT onto my straight talk LG290c phone

I suggest http://www.cellularoutfitter.com to purchase batteries or nicer but pricier accessories.

GOOD LUCK!!

Thanks for the feedback.