Options for Calling to From Mexico

Types
You can call a landline number in Mexico, which costs less than calling a mobile phone. Calling landlines in Mexico usually costs 4 cents per minute, while calling mobiles costs 20 cents per minute. Cell phone carriers also offer international calling plans, like AT&T's Viva Mexico, which charges $55 a month, and Verizon's Mexico-Friendly calling plan, where callers can opt to extend their nationwide coverage to Mexico for $50-$60 a month.
Effects
Calling from Mexico will help people keep in touch with their family members in the U.S. However, it is expensive to call from Mexico to the U.S.; that's why most of the time, it's those in the U.S. who call their friends and family in Mexico. Calls originating from the U.S. are not without a price though, and although it is cheaper to call Mexico from the U.S., having relatives from Mexico call the U.S. will help split costs.
Cheaper techniques
There are a number of options available for those who want to call Mexico from the United States. Prepaid cards are popular, and you can buy cards with denominations that range from $5 to $20. There may also be cheaper options online, such as using Skype, where you call directly from your computer to phones in Mexico. Skype has international rates for calls originating from a computer to a landline or mobilephone, but you and the recipient can make free calls if you are both online.
Calling From Mexico
One of the popular ways to call from Mexico is through payphone cards, which are also known as 'tarjeta lada.' Since calling from Mexico to the U.S. is expensive, Mexicans find it cheaper to limit their calls to the specified minutes on a card instead of calling direct. Another popular way of calling from Mexico aside from phone cards is through call back services, which charge your credit card directly. Call back services allow you to dial a number, hang up after a ring, then have an operator call you back to connect you to your call recipient.
Potential
With the onset of online telecommunications services, people may be able to call Mexico for free. Rebtel.com, a mobile VoIP provider, has a service called 'Smart Call,' where a person in the U.S. can talk to a person in Mexico for free on their mobile phones. Talkster.com also offers a similar service, where people can make international calls for free by listening to ads.

How to Send Receive SMS Using a GSM Modem

Send SMS
1. Type 'AT+CMGF=1' and press Enter to put your modem in the mode to send and receive text messages.
2. Type 'AT+CMGS='+12345678'' and press Enter. '+12345678' is the phone number of the recipient in this example.
3. Type the text of the message you'd like to send, and press Ctrl and Z keys. The modem will return '+CMGS: 62', indicating that the message was sent.
Receive SMS
4. Type 'AT+CMGF=1' and press Enter to put your modem in the mode to send and receive text messages.
5. Type 'AT+CMGL='ALL''. This command lists the received messages. For instance:+CMGL: 1,'REC UNREAD','+12345678',,'09/09/10,09:55:16+08'Text of message 1+CMGL: 2,'REC UNREAD','+12345678',,'09/09/10,09:56:03+08'Text of message 2OK'+12345678' is the phone number from which the message was sent. 'REC UNREAD' indicates that the message is currently unread. The date and time shows when the message was delivered to the modem by the mobile operator.
6. Delete the messages by typing 'AT+CMGD=1' and 'AT+CMGD=1'. Numbers 1 and 2 are the indeces of the messages as presented by the CMGL command in the previous step.

How to Send an International SMS for Free Online

Text 4 Free
1. Navigate to the Text 4 Free website.
2. Scroll down the page. Enter the number of the mobile phone that you are sending the SMS to and the corresponding service provider. If you do not know your service provider then click on the service from the phone number. If you would like to send the message to more than one person then click on the link to add another recipient, and enter their number and provider.
3. Enter the text of the SMS you wish to send in the second field. This can be up to 140 characters.
4. Enter the amount of text messages that you would like to send, if you want to send the text message to more than one receiver. If you are sending to a user of the providers Verizon, T-Mobile, Cingular, Cricket, US Cellular, and Cincinnati Bell in the USA, then you can attach a picture graphic or audio file with your SMS.
5. Enter the text in the verification box to verify that you are not a robot spammer. Click on 'Send Message' and your message will be sent to the recipient's numbers.
Send SMS Now
6. Go to the Send SMS Now homepage.
7. Select the country you are sending to and the service provider from the drop-down menus.
8. Add the details of the message sender, and the text of the message in the designated fields. Enter the validation code in the field next to the image, and then click the 'Send Message' button to send your message.
Free International SMS
9. Navigate to the Free International SMS website. Click on the 'New Send Free Here' image, to bring up a new window.
10. Enter the phone number that you wish to send the SMS. Enter the verification code in the box underneath and press the 'Enter' key.
11. Enter the text of your message in the box. Click on the yellow button containing a 'play' sign in the lower right-hand corner of the screen. Your message will then be sent to the recipient.

How to Send SMS Using WAP

1. Download the Now SMS software (see Resources).
2. Connect your mobile phone to your computer using a USB cord.
3. Open the Now SMS Software. Choose 'Send Text Message' from the menu.
4. Enter the recipient's mobile phone number in the 'Phone number' box.
5. Type your message in the 'Text' box and/or enter a website link in the 'WAP URL' box. Press 'Submit.'

How to Send an SMS Message to a Sprint Cell Phone

Via Email
1. Launch your email client. Load the email software or Web-based email site you regularly use. Log in using your user name and password.
2. Address the email to phonenumber@messaging.sprintpcs.com. For example, if sending a message to (313) 555-1212, address the email to 3135551212@messaging.sprintpcs.com.
3. Compose the message.
4. Click the 'Send' button in your email client to have the SMS message sent to a Sprint cell phone.
Via the Internet
5. Visit the Sprint SMS website, which offers a Web-to-SMS tool that lets you send messages (see Resources section).
6. Click the 'Sign On' button to enter your user name and password, or create a new one. Authentication is required to dissuade users from sending unwanted, anonymous text messages.
7. Enter the body of your text message into the text box onscreen.
8. Press the 'Send' button to have your SMS message forwarded to the Sprint cell phone.

How to Update Android Versions on My Phone

1. Press the 'Menu' button on your Android phone and tap 'Settings' to open the 'Settings' menu.
2. Scroll down to the very last option, 'About phone,' and tap on it.
3. Tap on 'System updates.' If an update to the Android operating system is available, the phone will automatically download and install it. If there are no updates available, the screen will say 'Your system is currently up to date.'

How to Send Free Picture Messages From PC to Mobile

USB Cord
1. Use a USB cord that is compatible with your phone. Plug the small end into your phone, then the larger end into your computer.
2. Open 'My Computer' from your Start menu or 'Control Panel.' Click on your device which should be displayed by a phone icon or display the model of your phone in text below an icon.
3. Open the folder on your computer where the pictures you wish to transfer are stored. Drag and drop the desired photos into your phone folder that you opened in the previous step. The photos should be saved in your phone photo album.
Email Transfer
4. Select the photos you want to transfer from a folder on your computer.
5. Login to your email. Attach the photos you want to send to your phone by clicking 'Compose' or 'New' to send a message. Click 'Attach' then wait for a window to pop up. Click the photos you wish to attach.
6. Wait a few seconds for the photos to upload then send to your phone. This works for phones that are email enabled. You can use any type of email address including those assigned by your cell phone carrier.