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Get 10GB of additional high-speed data that you can use on your phone or as mobile hotspot data. This add-on is recurring and will renew each billing cycle until canceled.

Get 2GB of additional high-speed data that you can use for your phone or hotspot.

This add-on is recurring and will renew each billing cycle until canceled.

Get 5GB of additional high-speed data that you can use for your phone or hotspot.

This add-on is recurring and will renew each billing cycle until canceled.

Double the amount of your included Google One storage from 100GB to 200GB.

Increase the amount of your included Google One storage from 100GB to 2TB (2,000GB).

Get 100 minutes of calling and unlimited text messages to numbers in the following countries while you are within the United States:

Bermuda, Czech Republic, El Salvador, Guadeloupe, Guatemala, Honduras, Kazakhstan, Nigeria, South Africa, Switzerland and Vietnam.

Get 200 minutes of calling and unlimited text messages to numbers in the following countries while you are within the United States:

Bermuda, Czech Republic, El Salvador, Guadeloupe, Guatemala, Honduras, Kazakhstan, Nigeria, South Africa, Switzerland and Vietnam.

Get 200 minutes of calling and unlimited text messages to numbers in the following countries while you are within the United States:

Argentina, Australia, Austria, Bangladesh, Belgium, Brunei, Bulgaria, Chile, Costa Rica, Cyprus, Denmark, Dominican Republic, Finland, France, Germany, Greece, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Israel, Italy, Japan, Luxembourg, Malta, Martinique, Netherlands, New Zealand, Norway, Paraguay, Poland, Portugal, Reunion, Romania, Slovakia, Spain, Sweden, Taiwan, United Kingdom and Venezuela.

Get 400 minutes of calling and unlimited text messages to numbers in the following countries while you are within the United States:

Argentina, Australia, Austria, Bangladesh, Belgium, Brunei, Bulgaria, Chile, Costa Rica, Cyprus, Denmark, Dominican Republic, Finland, France, Germany, Greece, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Israel, Italy, Japan, Luxembourg, Malta, Martinique, Netherlands, New Zealand, Norway, Paraguay, Poland, Portugal, Reunion, Romania, Slovakia, Spain, Sweden, Taiwan, United Kingdom and Venezuela.

Get 50 minutes of calling and unlimited text messages to numbers in the following countries while you are within the United States:

Afghanistan, Andorra, Angola, Anguilla, Antigua and Barbuda, Armenia, Aruba, Bahamas, Bahrain, Barbados, Belize, Benin, Bolivia, Botswana, British Virgin Islands, Cambodia, Cameroon, Cape Verde, Cayman Islands, Croatia, Dominica, Ecuador, Egypt, Estonia, Ethiopia, Fiji, French Polynesia, Georgia, Ghana, Gibraltar, Grenada, Guyana, Haiti, Iraq, Jamaica, Jordan, Kenya, Kyrgyzstan, Laos, Latvia, Lebanon, Macau, Mali, Moldova, Monaco, Montenegro, Montserrat, Morocco, Nepal, Netherlands Antilles, Nicaragua, Pakistan, Panama, Philippines, Qatar, Russia, Saint Kitts and Nevis Anguilla, Saint Vincent and Grenadines, Saudi Arabia, Sri Lanka, St. Lucia, St. Maarten/Nld, Sudan, Suriname, Syria, Tajikistan, Tanzania, Trinidad And Tobago, Turkey, Turks And Caicos Islands, Uganda, Ukraine, United Arab Emirates, Uruguay and Yemen.

Get 100 minutes of calling and unlimited text messages to numbers in the following countries while you are within the United States:

Afghanistan, Andorra, Angola, Anguilla, Antigua and Barbuda, Armenia, Aruba, Bahamas, Bahrain, Barbados, Belize, Benin, Bolivia, Botswana, British Virgin Islands, Cambodia, Cameroon, Cape Verde, Cayman Islands, Croatia, Dominica, Ecuador, Egypt, Estonia, Ethiopia, Fiji, French Polynesia, Georgia, Ghana, Gibraltar, Grenada, Guyana, Haiti, Iraq, Jamaica, Jordan, Kenya, Kyrgyzstan, Laos, Latvia, Lebanon, Macau, Mali, Moldova, Monaco, Montenegro, Montserrat, Morocco, Nepal, Netherlands Antilles, Nicaragua, Pakistan, Panama, Philippines, Qatar, Russia, Saint Kitts and Nevis Anguilla, Saint Vincent and Grenadines, Saudi Arabia, Sri Lanka, St. Lucia, St. Maarten/Nld, Sudan, Suriname, Syria, Tajikistan, Tanzania, Trinidad And Tobago, Turkey, Turks And Caicos Islands, Uganda, Ukraine, United Arab Emirates, Uruguay and Yemen.

Make and receive unlimited calls to and from landlines in the following countries:

American Samoa, Argentina, Australia, Austria, Bangladesh, Belgium, Brunei, Bulgaria, Chile, Costa Rica, Cyprus, Czech Republic, Denmark, Finland, France, Germany, Greece, Guadeloupe, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Israel, Italy, Japan, Kazakhstan, Luxembourg, Malta, Martinique, Netherlands, New Zealand, Northern Mariana Islands, Norway, Panama, Paraguay, Poland, Portugal, Reunion, Romania, Russia, San Marino, Slovakia, Spain, Sweden, Switzerland, Taiwan, Turkey, United Kingdom and Venezuela.

Make and receive unlimited calls and text messages to/from: Brazil, China (excl. Taiwan, HK), Colombia, French Guyana, Guam, India, Malaysia, Peru, Singapore, South Korea, and Thailand from your Metro phone while you are within the U.S.

This add-on is also compatible with the Mexico and Canada Unlimited add-ons, World Calling, and other Metro Global Voice services, but may not be compatible with other Metro add-ons besides those.

Call landlines and mobile phones in Latin America and select other countries from the US for $10/mo. Here's what it includes:

• Mexico, Peru, Colombia, and Brazil: uncapped
• Cuba: 15 minutes
• Panama, Bolivia, Ecuador, Nicaragua, and Uruguay: 50 minutes
• Guatemala and Honduras: 100 minutes
• Chile, Argentina, Costa Rica, Paraguay, Venezuela, Dominican Republic, El Salvador, Spain, and Portugal: 200 minutes

Make unlimited calls to and from mobile phones and landlines in Mexico and Canada, plus unlimited texting. This add-on also includes up to 5GB of data roaming in Mexico and Canada.

Make unlimited calls to and from mobile phones and landlines in Mexico and Canada, plus unlimited texting. This add-on also includes up to 10GB of data roaming in Mexico and Canada.

Device protection for your Metro phone that includes screen repair and multiple claims, for $6/mo plus tax.

Basic device protection for your Metro phone for $3/mo plus tax.

Metro's most comprehensive device protection, with unlimited claims, for $10/mo plus tax.

Premium Handset Protection for your Metro phone, starting at $5/mo per device.

Review the details of your local outbound calls for $1/mo.

McAfee Security helps protect your device against threats, viruses, and risky apps for $3/mo.

Scam Shield Premium adds advanced scam call blocking for $2/mo.

The Security Bundle combines data threat protection and scam call protection for $5/mo.

Get 1,000 minutes per month of calling to shared calling numbers for $10/mo.

Get 300 minutes per month of calling to shared calling numbers for $3/mo.

This add-on includes a variety of perks and benefits. Here's exactly what's on the Metro by T-Mobile website:

Google One Membership

• Plenty of space: With 200GB of cloud storage you have plenty of space to store all your high-resolution photos, videos, and other important files. You can even share your storage with up to 5 additional people.
• Automatic Backup: Keep the photos, videos, contacts, and more on your phone automatically backed up with Google One. And if you break, lose, or want to upgrade your device, you can seamlessly transfer everything from your old phone to your new one.
• Additional Benefits: Also included in your membership are access to Google experts and exclusive member benefits, like a Google Play Credit and 3% credit back on Google products.
• Learn more here or download the app now at Google Play. Not available on iPhone.

Scam Shield Premium

• Your Ultimate Call Control Center: Scam Shield™ app is a free app that lets you manage your anti-scam protections, so you can identify, block, and report likely scam calls.
• Know Who’s Calling: Caller ID reduces unidentified calls by displaying a caller’s information, even if they’re not in your contact list.
• Take Total Control: Optimize and organize your mobile life with control over your calls and voicemails. Get information with reverse phone number lookup and get voicemails texted to you automatically.
• Learn more here or download the app now at Google Play or Apple App Store.

I personally think it's probably best to just get the regular Google One add-on for $1 per month and to save yourself the $24 per year.