I am using nokia 5130 .but it was some problem,some times my mobile showing sim card regestration failed

<b> Nokia 5130 Mobile Unlock <br /></b> <br /><br />*#06# for checking the IMEI (International Mobile Equipment Identity) for Nokia 5130 To view Week and Year of manufacture enter *#3283# [*# D A T E #] <br />The last two digits are the year. If the year is 95, the first two digits are the month. For 96 the first two digits are the week of the year. <br /><br />To view the software version on Nokia 5130 enter *#170602112302# or *#9999# <br />On newer phones, the code has been changed to *#682371158412125# <br /><br />All Nokia phones (Nokia 5130 and newer) have four different SIM locks which can be used to lock the phone for up to 4 different providers. But most phones with restriction only have one lock activated. (Lock 1) <br /><br />The main code used in Nokia 5130 phones is : <br />#pw+(master code)+Y# <br />This code is able to check, activate or remove Sim card restriction (SP-lock). <br />Use the * key to get the p, + and w chars. <br />'Y' has to be 1,2,3 or 4 - depending of what lock you what to deal with. <br /><br />#pw+1234567890+1# for Provider-Lock status <br />#pw+1234567890+2# for Network-Lock status <br />#pw+1234567890+3# for Country-Lock status <br />#pw+1234567890+4# for SimCard-Lock status <br /><br /># = DOUBLE-CROSS <br />W = PRESS "*" THREE TIMES <br />P = PRESS "*" FOUR TIMES <br />+ = PRESS "*" TWO TIMES <br />MASTERCODE = 1234567890 <br />Y = NUMBER 1 TO 4 <br /><br />(master code) is a 10 digit code, based on the phones IMEI number. <br /><br />Eg. To remove restriction on lock 1 type following code: <br />#pw+(master code)+1# <br />If you just want to check your phone use 10 random numbers Eg. 1234567890 as the (master code) <br />eg. To check if phone if restricted on lock 1 type the following code: <br />#pw+1234567890+1# <br /><br />Bypass the SP lock With a Nokia 16xx/21xx/31xx/51xx/81xx <br /><br />1. Insert SIM card of different provider. <br />2. Turn on the phone and press the UP VOLUME key for 3 sec. <br />Then release it and the phone says PIN CODE? <br />3. Press the "C" key. <br />4. Then Press * and wait until it disappears and appears again, then press * one more time and 04*PIN*PIN*PIN#<br /><span></span>