Once your test is complete, you can analyse the results to determine whether the results confirm your hypothesis. Keep sample size and significance in mind so you never draw conclusions based on effects that resulted by chance. For example, if all conditions besides the test variable were the same and version A was sent out to 2000 recipients and had 3 conversions, and version B was also sent out to 2000 recipients but had 60 conversions, it’s safe to say that version B has performed significantly better. If you want to be sure about the significance of your results, you can always use a significance calculator.   
Since spam laws differ from country to country, SMS service providers are usually location specific.[21] This is a list of the most popular and reputable SMS companies in each continent, with some information about the number of phones in use. It is important to note that message pricing, message delivery, and service offerings will also differ substantially from country to country.
Mobile marketing approaches through SMS has expanded rapidly in Europe and Asia as a new channel to reach the consumer. SMS initially received negative media coverage in many parts of Europe for being a new form of spam as some advertisers purchased lists and sent unsolicited content to consumer's phones; however, as guidelines are put in place by the mobile operators, SMS has become the most popular branch of the Mobile Marketing industry with several 100 million advertising SMS sent out every month in Europe alone. This is thanks impart to SMS messages being hardware agnostic—they can be delivered to practically any mobile phone and accessed without a Wi-Fi or mobile data connection. This is important to note since there are over 5 billion unique mobile phone subscribers worldwide in 2017, which is about 66% of the world population.[7]
Short codes are half the length of long codes, coming in at just 5 or 6 digits. Marketers prefer to use short codes for campaigns, since they lift response rates considerably and reduce the opportunity for entry errors. Short codes can be absorbed in a glance and typed in a flash, making them perfect for customer-initiated engagement. Yet, they’re not without their shortcomings. Dedicated short codes are more expensive and take much longer to setup. But they’re worth the investment if you’re launching an SMS marketing program or customer-initiated engagement channel.
Unfortunately, this is a loaded question because one portion of the question is 100% legal and then one portion of the question is 100% illegal. So, let me explain. You can purchase mobile phone numbers. There is many data brokers that are out there that will sell you mobile phone numbers. On the other hand, you cannot text message those phone numbers because it is illegal. So, while you can, yes, buy mobile numbers, you cannot text message those phone numbers. Now why can’t you text message those phone numbers and why is it illegal? Well, here in the United States, we have the FCC. And FCC developed federal law called the Telephone Consumer Protection Act. It’s pretty long but some people call it the TCPA. And essentially, it says you cannot text message consumers without their consent. And it has to be prior consent. It can’t be consent after the fact because that’s really not consent, I think. So, in the TCPA, it’s very clear that you cannot text message customers without their consent. Now, if you do text message customers without their consent, so let’s say you purchased a list of mobile phone numbers, and you text message those phone numbers, that would be text messaging people without their consent. Now, if you do that, under the TCPA, which is federal law, consumers have the right to sue your business for anywhere between $500 and $1,500 per text message. Now that’s not text message you sent out. So if you send 1 text message to a million people, you’re not gonna be sued $500 to $1,500, you’re gonna be sued for a million times $500 or $1,500. So you can see that buying phone numbers, while that is usually cheap, the consequences of buying mobile phone numbers and then text messaging those phone numbers can be in the millions or hundreds of millions of dollars. So you do not want to buy mobile phone numbers and text message them because while it is legal to buy the phone numbers, it is 100% illegal to text message those phone numbers that you purchased that never gave your business consent to send text messages to them. So hopefully that answers the question as to, “Can you buy mobile phone numbers for text message marketing?”
In order to gain their mobile number, they will have to have a great deal of trust in you and a pre-existing relationship will help. They also need to know that what you'll be sending them via SMS message is exclusive offers, not the same offer that you give via email and social media. Be clear with your customers and use the following guidelines when introducing SMS marketing to your customers:
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