While the reasons for these might be many, including security aspects (as one who uses your SIM can easily get access to your contacts), it does mean that the process of transferring contacts between devices can become cumbersome.
Inkasta oo laga yaabo in sababaha Waayo, kuwaas oo qaar badan, oo ay ku jiraan dhinacyada ammaanka (sida mid isticmaasha SIM si fudud u heli kartid aad xiriirka la leedahay), waxa aanu ka dhigan tahay in geeddi-socodka lagu soo xiriiro wareejinta noqon karaa eheeyn.