Question about Sony Ericsson Z750 Cellular Phone

Open Question

My phone SUCKS!! I am on my third (3)rd handset. I have had to master reset this phone at least four times, when ever it wants it just turns itself off especially during data transmissions.

Posted by on

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My screen wants me to enter a password but any password that i entered doesnt work althout evry reset that i try doesent work what should i do?


Make sure you have the correct passwords for the various 'lock':
  • Phone/Handset Lock
  • Sim Lock

In either case, a handset reset will not unlock your phone!

If it is a Phone/Handset Lock, then Acer / manufacturer Help Desk maybe able to assist you. A third party mobile phone unlocker may also be able to 'master' reset your handset (use Google to search).

If it is a SIm Lock, a PUK code may be required (you will be prompted for this) and any excess attempt will permanently disable your Sim card: you can request your PUK code from your mobile service provider help desk.

Sep 18, 2011 | Acer F900 Quadband 3G HSDPA GPS Unlocked...

10 Answers

Security code N 73


What do you mean by Security code.

SIM pin code:
This is a pin code that locks the sim card until you enter the correct code. This protects your account, even
if your sim is put into another handset. To reset it, you need the PUK code:
Pin Unlock Code (PUK)
If you miss key (or forget) your SIM pin code, and enter the wrong one 3-5 times in a row, the SIM will lock up, and you’ll need to enter the PUK unlock code to release it. You should ask your Network Service Provider for this code when you need it. Don’t try to guess it, because after a few wrong guesses, the SIM card will be permanently disabled.
Phone Security Code:
This locks the handset, as opposed to the sim card. You can also set some handsets to only accept a “new” sim if the phone security code is entered. To reset it, you need the Master code code:
Master Reset Code
Sometimes known as the Master Code, this allows you to unlock a handset if you have entered the Security Code wrongly too many times.
Which is the one that you want?
Special Code/Service Provider Lock Code:
This code is required to allow a phone locked to a particular network's SIM cards to be used with a SIM card from another network. Orange and T-mobile lock handsets in this way, though O2 and Vodafone are beginning to lock PAYG and WAP handsets. The unlock code varies from individual handset to handset.
Blacklisting:
This is not a security code, but it works like one! To help combat mobile phone thefts, the networks share a database of the IMEI (International Mobile Equipment Identity) of mobile phones that have been reported stolen. Once a phone is on this list, it will not be allowed to use any of the networks.
This can be a risk if you buy a second-hand phone, because if it has been stolen, or if an unscrupulous seller makes an insurance claim after selling, the phone you bought in good faith may be permanently disabled.
Be very careful to check the source of a second-hand phone!
-----------------------------
The default security code for Nokia is 12345
IMEI: 356406017443168
Master code: 5335036136
Take your SIM card out first.

This is the code needed to reset the Security code, nothing else, and it’s for your phone only. You type in the security codes (anything) until the phone request the Master code; when it does, leave your phone still, don’t use it for 15 minutes, then type in the Master code.

Jul 06, 2008 | Nokia N73 Cellular Phone

1 Answer

Master reset codes for Motorola MD61 handsets


Remove the spare battery (if any) and handsets from the base station.
Navigate in the menus to the "base settings". Your screen should say "ringer volume, ringer melody, keypad tone, tone/pulse, ..."
Punch in the reset code (including the stars): **335782
Wait for the phone to restart itself (about 5 seconds).
Re-register all of your handsets.

Dec 15, 2009 | Motorola Mobility MD681 5.8GHz Digital...

1 Answer

Have forgot my securitycode for my mobile nokia 3110c


SIM pin code:
This is a pin code that locks the sim card until you enter the correct code. This protects your account, even
if your sim is put into another handset. To reset it, you need the PUK code:
Pin Unlock Code (PUK)
If you miss key (or forget) your SIM pin code, and enter the wrong one 3-5 times in a row, the SIM will lock up, and you’ll need to enter the PUK unlock code to release it. You should ask your Network Service Provider for this code when you need it. Don’t try to guess it, because after a few wrong guesses, the SIM card will be permanently disabled.
Phone Security Code:
This locks the handset, as opposed to the sim card. You can also set some handsets to only accept a “new” sim if the phone security code is entered. To reset it, you need the Master code code:
Master Reset Code
Sometimes known as the Master Code, this allows you to unlock a handset if you have entered the Security Code wrongly too many times.
Which is the one that you want?
The default security code for Nokia is 12345

Hope it helps!

Dec 10, 2009 | Nokia 3110 Cellular Phone

4 Answers

The master code to my Nokia 5300 phone


The default security code for Nokia is 12345
IMEI: 353095026615313
Master code: 0377253107
1/ Close all applications on your phone.
2/ With your phone switched ON, remove the battery.
3/ Remove the SIM card.
4/ Replace the battery without the SIM card.

5/ Switch your phone on.
6/ Type any security codes until the phone request the Master code.
When it does, leave your phone still, don’t use it for 15 minutes, then type in the Master code.
This is the code needed to reset the Security code, nothing else, and it’s for your phone only.
If it does not request the Master code, your phone will have to be connected to a computer and an unlock box to restore the Security code.

Read this:
SIM pin code:
This is a pin code that locks the sim card until you enter the correct code. This protects your account, even
if your sim is put into another handset. To reset it, you need the PUK code:
Pin Unlock Code (PUK)
If you miss key (or forget) your SIM pin code, and enter the wrong one 3-5 times in a row, the SIM will lock up, and you’ll need to enter the PUK unlock code to release it. You should ask your Network Service Provider for this code when you need it. Don’t try to guess it, because after a few wrong guesses, the SIM card will be permanently disabled.
Phone Security Code:
This locks the handset, as opposed to the sim card. You can also set some handsets to only accept a “new” SIM card if the phone security code is entered. To reset it, you need the Master code:
Master Reset Code
Sometimes known as the Master Code, this allows you to unlock a handset if you have entered the Security Code wrongly too many times.
Are you sure it’s the Master code you need.

Sep 29, 2008 | Nokia 5300 Grey Cellular Phone

1 Answer

Security code


SIM pin code:
This is a pin code that locks the sim card until you enter the correct code. This protects your account, even
if your sim is put into another handset. To reset it, you need the PUK code:
Pin Unlock Code (PUK)
If you miss key (or forget) your SIM pin code, and enter the wrong one 3-5 times in a row, the SIM will lock up, and you’ll need to enter the PUK unlock code to release it. You should ask your Network Service Provider for this code when you need it. Don’t try to guess it, because after a few wrong guesses, the SIM card will be permanently disabled.
Phone Security Code:
This locks the handset, as opposed to the sim card. You can also set some handsets to only accept a “new” sim if the phone security code is entered. To reset it, you need the Master code code:
Master Reset Code
Sometimes known as the Master Code, this allows you to unlock a handset if you have entered the Security Code wrongly too many times.
Which is the one that you want?
The default security code for Nokia is 12345

Apr 23, 2008 | Nokia 3110 Cellular Phone

10 Answers

Unlock Nokia N95 8GB


plz give nokia n95 master cod

Apr 05, 2008 | Nokia N95 Cellular Phone

5 Answers

Secret code of nokia phones


Turn off your phone, remove the battery, take out the sim card, than put it in a bag and throw it away.Let me know if this was helpful

Apr 01, 2008 | Nokia 6600

1 Answer

Lock code


SIM Pin Code.
This is a pin code that locks the sim card until you enter the correct code. This protects your account, even
if your sim is put into another handset. ---
To reset this Pin number you need the:
Pin Unlock Code (PUK)
If you miss keyed (or forget) your SIM PIN code, and enter the wrong one 3-5 times in a row, the sim will lock up, and you'll need to enter the unlock code to release it. You should ask your Network Service Provider for this code when you need it. Don't try to guess it, because after a few wrong guesses, the SIM card will be permanently disabled.

Phone Security Code:
This locks the handset, as opposed to the sim card. You can also set some handsets to only accept a "new" sim if the phone security code is entered.
To reset this Security number you need the:
Master Reset Code
Sometimes known as the Master Code, this allows you to unlock a handset if you have entered the Security
Code wrongly too many times.
For IMEI 356404010441953 this is the Master Code:
3520316615 to use it:
You type in the security codes (any) until the phone request the Master code; when it does, leave your phone still, don't use it for 15 minutes, then type in the Master code.

Mar 25, 2008 | Nokia N73 Cellular Phone

1 Answer

Vtech,5.8 3-phone w/digital recorder, model DS4122-3 None of the phones work they either say connecting or put back in the charger . these are only 2 months old?


To deregister ALL handsets:
Step 1: Press and hold FIND HANDSET on the main telephone base for 10 seconds.

Step 2: When the IN USE light starts to flash, release the FIND HANDSET button.

Step 3: Press and release FIND HANDSET again. The IN USE light will turn off and in a few seconds, all handsets will be de-registered.

Step 4: All handsets will show NOT REGISTERED.

To register a handset (register 1 handset at a time):
Step 1: Place the handset in the base unit or a charger that is connected to a power outlet. If PRESS FIND HNDST 4 SEC ON BASE does not appear on the screen after a few seconds, lift up handset and place in base or charger again.

Step 2: On the telephone base, press and hold FIND HANDSET for four seconds. Release FIND HANDSET once the IN USE light comes on.

After a while the handset will emit a series of tones, the newly registered handset will be assigned the lowest extension number not previously assigned to another system handset (1-4) when successfully registered. Repeat Steps 1 and 2 if the handset does not successfully register to the telephone base within two minutes.

REPEAT THE REGISTRATION PROCEDURE FOR EACH SYSTEM HANDSET.

Make sure the handsets are not receiving interference from other appliances, cell phones, etc.

IF deregistering does not work .. you will need to reset the entire system
Step 1: Disconnect the power to the telephone base.

Step 2: Disconnect the handset battery.

Step 3: Wait a few minutes and then reconnect the power to the telephone base.

Step 4: Reconnect the handset battery

Step 5: Wait about one minute for the handset to re-establish a link with the telephone base and then test the phone again.
You will need to set the time and date again after resetting the entire system.

Mar 11, 2008 | Lands Phones

Not finding what you are looking for?
Sony Ericsson Z750 Cellular Phone Logo

Related Topics:

77 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Ericsson Cell Phones Experts

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

Sandeep Shenoy

Level 2 Expert

187 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18394 Answers

Are you a Sony Ericsson Cell Phone Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...