Released in 2013, the "old man" was the first smartphone from Apple, equipped with a fingerprint scanner and 64-bit processor. These characteristics, combined with the rather efficient A7 processor and the extremely popular four-inch form factor, allow it to be “in operation” even after four years. Several modifications of it are produced, differing in the support of the fourth generation frequencies. Therefore, when buying, it is important to understand which model of iPhone 5S is in front of you - GSM or CDMA. How to find out the build number and not make a mistake with the purchase, we will tell.
GSM and CDMA
Under these abbreviations are the names of various technologies for transmitting a cellular signal. In general terms, the difference between the standards is that GSM separates the signal using frequency and time modulation, while CDMA uses only code modulation for the same purpose. As a result, the subscriber in CDMA networks receives a higher quality of communication, and the operator can provide coverage with fewer stations, besides having more flexible settings.
In Russia, networks of both standards are used. Along with GSM, which provides wide coverage, CDMA is actively developing, providing fast data transfer. What is the difference in the iPhone 5S GSM or CDMA models, how to find out before buying a phone, so as not to have communication problems, we will figure it out in the next section.
Apple Product Labeling
All Apple products, which include iPhone modifications, traditionally have alphanumeric designations, which can determine their preferred region of use and frequency range. It looks as follows - A0000. Instead of zeros, of course, a digital model code is affixed. For iPhone 5S, marking is applied in two places:
- If you purchased the phone in its original packaging, in a reliable store or from an authorized dealer, then just look at it on the box.
- If the purchase is made by hand, then it is better to inspect the phone itself, not trusting the attached packaging. The second marking place for the iPhone is its back cover.
So, we figured out the search location. Now let's deal with the iPhone 5S GSM or CDMA itself. How to find out the supported frequency range after you find the model code? We must say right away that any model will support the second generation network, but the smartphone is not only purchased for calls - its operation involves the use of the Internet, without which it will be just an expensive toy.
LTE frequencies and iPhone 5S models
In Russia, four frequency ranges are used to create fourth-generation networks . The seventh range is most widespread, followed by the 3rd and 20th.
Frequency ranges of models| Model number | Used LTE frequencies |
| A1457 | 3, 7, 20 |
| A1530 | 3, 7, 20, 38 |
| A1453 | 3, 20 |
| A1533 | 3, 20 |
As can be seen from the table, the A1457 and A1530 models will work perfectly in domestic networks, but the two remaining ones can unpleasantly surprise. You can purchase them “with caution” only if you know the frequencies used by your mobile operator and are not going to travel.
Finally
In this article, we told you about the difference between the iPhone 5S GSM or CDMA models, how to find out and where to find its number. We hope that the information received will help you. Successful acquisitions!