Question

you are asked to help change some settings on an older smartphone. when you examine the phone, you find it doesnt have a slot for a sim card. what type of technology can you confidently say this phone is not using? (choose all that apply.)

4g
5g
cdma with 3g
gsm with 3g

Explanation:

Analyze SIM card requirements for cellular technologies

• GSM networks (including GSM with 3G, 4G LTE, and 5G) require a physical SIM card (or eSIM in modern devices) to identify and authenticate the subscriber on the network.
• Older CDMA networks (such as CDMA with 3G) did not use physical SIM cards; instead, the subscriber information and device identification were programmed directly into the phone's internal hardware.

Determine which technologies the phone is NOT using

• Since the older smartphone does not have a slot for a SIM card, it cannot connect to networks that strictly require a SIM card.
• Therefore, the phone is definitely not using 4G, 5G, or GSM with 3G.
• It is confidently using CDMA with 3G (which does not require a SIM card), meaning the technologies it is NOT using are 4G, 5G, and GSM with 3G.

Answer:

• [x] 4G (Correct answer)
• [x] 5G (Correct answer)
• [ ] CDMA with 3G
• [x] GSM with 3G (Correct answer)