I have an LGL75C with new sim card and cannot switch apps from phone memory to sim card

Check to see that you did not get too large a card for the phone. Your manual will tell you the limits you have to abide by.

Although the Android phones and tablets can add (micro) SD cards, that will not extend the internal memory. You should see the SD card as a extra hard disk. As soon as you installed extra apps, and the phone is telling you the memory is full, you only can free memory, by deleting apps from the main memory.
If you thought I can buy a phone with less memory, because the SD cards are very cheap and will extend the internal memory, you made an error. New phones from Samsung now get more than 10 Gbyte of apps, you even can't remove. So only about 5 Gbyte is free to use for other apps and messages.
Next phone, take one with lots of internal memory, if you like to install other apps.

Although the Android phones and tablets can add (micro) SD cards, that will not extend the internal memory. You should see the SD card as a extra hard disk. As soon as you installed extra apps, and the phone is telling you the memory is full, you only can free memory, by deleting apps from the main memory.
If you thought I can buy a phone with less memory, because the SD cards are very cheap and will extend the internal memory, you made an error. New phones from Samsung now get more than 10 Gbyte of apps, you even can't remove. So only about 5 Gbyte is free to use for other apps and messages.
Next phone, take one with lots of internal memory, if you like to install other apps.

I would recommend backing up the device and then resettings to factory defaults, sounds like your software may be corrupt.

Settings > Privacy > Storage > Factory data reset.

Looks like a garbage phone to me. From what I read it only has 162 MB internal memory available to the user.

I do not own nor have I ever used that particular handset. From what I read you can move apps to the micro SD card, but you likely cannot move system apps as with any other phone.

You should go through and move what you can to the memory card so you at least have enough room to download new apps, then also move them to the memory card.

The reviews on the phone are rather poor so you may just consider a new phone. Research them carefully before you purchase. I recommend you do your research at Phonescoop.com and read the "User Reviews" in addition to the overall specifications.

Good luck.

move the apps tht are saved on ur memory card to ur phone memory

Check settings for the SIM card. Sometimes data is stored on the SIM card rather than the memory card.
You can also change that setting to store data on the memory card before the SIM card.

Try default codes

it is an issue not only to samsung phones but the other brands and model as well.
to give you an idea, the causes of phone freezes are.
1. firmware failure
2. low phone memory capacity due to some big files were saved to phone
3. errors on your memory card(i.e; not formatted through cp or formatted to pc instead of your cp formatting utility, etc)
4. deleted file system for your phone or relocations of its strings
5. deleted or modifications on the registry
6. other applications are running on backgrounds.
7. sim errors or the phone is having difficulty to recognize the it.
many more...

to help you fix the problem try to do the steps.
1. back up your phone files, examples are, contacts, messages, mms, notes, task, etc through your samsung pc suite.
2. switch off your phone.
3. remove your battery
4. remove your sim and memory card
5. reinsert your battery and switch the phone.
6. from your keypad menu, type this code*2767*3855# to factory reset your phone and erase or fix the errors encountered by it.
7. switch off your phone, reinsert your sim and battery and switch on play with it first by setting and configuring it and check.
8. if your sim doesn't give you any lagging or freezes, switch it off, and insert your memory card and check.

after a successful factory reset had taken place and your problem was not fixed.....troubleshooting steps.
note 1. if this doesn't fix your problem, try to remember what you have done lately to your phone.
example of it is, unlocking to all networks by the use of a patch, or reflash. if this was what you have done lately, try to go back to the one who unlocked it and have him reflash the firmware or the latest version of the firmware for your phone.

note 2, try a different sim check if lagging and pauses occurs. if not then your sim has the errors.

note 3, remove the sim and insert your memory card, if lagging and freezes occurs, there's also a problem in your memory card. you may want to insert it to your computer and run the virus scanner from your pc. and reinsert it after the virus scan and check.

note 4. after factory reset had taken place, and the phone restarts and without sim and memory it gives you the same problem, go to your nearest samsung service centers, you may be needing a firmware upgrades or firmware reflash.

regards..

"my phone just says NOKIA and its blank white- no matter what you press, no change even though it is fully charged what to do??? pleeeese help "

I had the same problem, I took off the memory card and de sim card, i turned the phone on... and then off... and then I had put back the two cards, and i turned it on again... I worked