▁brand ed ▁ph ones . ▁ ▁Re views ▁ ▁Although ▁being ▁relatively ▁small ▁for ▁a ▁phone ▁with ▁its ▁features , ▁the ▁K 6 1 0 ▁was ▁critic ized ▁for ▁not ▁including ▁several ▁common ▁features ▁found ▁in ▁other ▁contemporary ▁mobile ▁ph ones , ▁namely ▁its ▁lack ▁of ▁an ▁FM ▁radio , ▁Ir DA , ▁and ▁LED ▁lights ▁for ▁taking ▁pictures ▁in ▁low ▁light ing ▁conditions , ▁as ▁well ▁as ▁its ▁sub - par ▁photo ▁quality . ▁ ▁Mod ding ▁Since ▁K 6 1 0 i ▁and ▁W 6 6 0 i ▁have ▁relatively ▁similar ▁hardware ▁specific ations ▁and ▁a ▁similar ▁main board , ▁soft ▁modifications ▁are ▁available ▁to ▁convert ▁a ▁K 6 1 0 i ▁to ▁a ▁W 6 6 0 i ▁by ▁using ▁flash ing ▁software ▁and ▁the ▁firm ware ▁files ▁of ▁the ▁W 6 6 0 i ▁model . ▁Such ▁modified ▁phone ▁will ▁be ▁able ▁to ▁use ▁the ▁Walk man ▁feature ▁which ▁is ▁available ▁to ▁W ▁series ▁ph ones ▁only ▁however ▁will ▁be ▁unable ▁to ▁use ▁the ▁radio ▁function ▁of ▁the ▁Walk man ▁phone ▁due ▁to ▁the ▁lack ▁of ▁radio ▁tun er ▁in ▁the ▁original ▁K 6 1 0 i . ▁▁ ▁This ▁modification ▁will ▁re voke ▁any ▁remaining ▁war rant y ▁for ▁the ▁phone . ▁ ▁See ▁also ▁ ▁List ▁of ▁Sony ▁Eric sson ▁products ▁ ▁References ▁ ▁External ▁links ▁▁▁ ▁Official ▁website ▁ ▁mobile - review . com ▁ ▁K 6 1 0 ▁Category : Mobile ▁ph ones ▁introduced ▁in ▁ 2 0 0 6 <0x0A> </s> ▁The ▁following ▁events