8310 I turned the phone off now how do I turn it back on?

Do you need to unlock your Blackberry Curve 8310 from network lock?Blackberry has 10 unlocking tries..So you have 4 remaining unlocking tries.You can get the unlock code from the site
Classicunlocking.com for Blackberry Curve 8310 and unlock it easily using the unlocking instructions below...

Blackberry Curve 8310 Unlocking Instructions

Warning : Do not enter any wrong unlock codes on your Blackberry Curve 8310 mobile phones. If you enter over a certain amount of wrong unlock codes on your Blackberry Curve 8310 mobile phone, your phone may get hard locked and sometimes become unusable.
1 - Switch on your Blackberry Curve 8310 with any Sim card and Turn off all Wireless connections.
2 - Go to Settings.
3 - Go to Options.
4 - Select Advanced Options.
5 - Select SIM Card.
6 - Type MEPD using your Blackberry Curve 8310 keyboard (NOTE: You will not see any text appear on the screen while typing MEPD),
7 - Type MEP then hold 'ALT" key and type number 2.(NOTE: You will not see any text appear on the screen while typing MEP2),
8 - You will then be presented with a prompt "Enter Network MEP Code". Type in the Unlock Code and press in the track wheel / jog dial to confirm,
9 - Your Blackberry Curve 8310 will now be unlocked.

i recommend you do a battery test because sometimes faulty batteries could cause this problem.
do you see the light on the phone?
do a battery test, borrow a friend's battery, test it in your phone see if your phone turns on,if it does i recommend you replace your battery

It could be an alarm that you forget to remove.

take out the battery and put it back in after about a minute

Turn the device off and on...press and hold the red end button until the phone turns of...repeat to bring it back up..the phone will then be reset.

I would really recommend replacing the battery in the handset. Keep in mind retail stores usually are much more expensive than online ordering...

I’m happy to help further over the phone at https://www.6ya.com/expert/brandon_156682b88afabb53

Take off the battery from the back and turn it back on.

Hello,

If you would like to erase everything from the 8310 and set everything back to factory defualts: First Remove your memory card, if you have one and then:

Click Options, Advanced Options, Security, General Settings, Wipe Handheld. It should prompt you to actually type in the word "blackberry" and then will erase everything from the phone and set everything back to factory defaults. You will need to activate the phone again through your carrier if you would like to continue using it. Hope this helps!

check your battery terminal. I had this same problem right out of the box. it would only stay on for 15secs shut down and continue to cycle. turns out one of the 4 prongs wasnt connecting right with the battery. I could clearly see one was shorter than the others.

The phone would only work if connected to the computer.
Are you within your 30days? or 1yr manfacture warranty? or 90 days if it refurb (ATT)(anyway)

get a message saying my USB is not sufficient enough to charge phone ???? It works on other computers just not the one I need it to work on.