"4G" should stay as a proper term, but maybe they want it to stay as is because it's a brand/term? Wait, the user said to skip brands and names, so "ZTE MF65" and "ZTE" models should stay, but "4G" is a network standard. Maybe "4G" should be in the same format. Wait the user said to switch all terms with three options as word3. Proper nouns stay. So "4G" is a proper term here? Maybe the user wants "4G" to stay as is. Hmm, the example had "4G" as 4G-LTE, so maybe I should follow that. Let me check the previous example again.
This modem provides rapid high-speed connectivity and works with various frequency ranges, making it an excellent alternative for individuals requiring dependable online services while mobile. Huawei 4G adapter: This module delivers quick 4G speeds and functions across diverse band ranges, serving as a solid choice for clients demanding stable internet accessibility during travel. Zte Mf65 Upgrade To 4g
"Improved" could be "Enhanced," "Upgraded," "Advanced." "Network" might need synonyms like "Telecom," "Communication," "Connection," but "network" is specific. Maybe "Improved Network" becomes Enhanced Telecom... Wait, the instruction is to replace all words except proper nouns with three alternatives. So each word individually. Let's confirm that each word in the sentence is broken down into its own spintax. "4G" should stay as a proper term, but
Starting with "dongle": maybe modem, adapter, or device. Then "fast 4G speeds" could be quick 4G connections, high-speed LTE. "Supports multiple frequency bands" might become compatible with various frequency bands, works across different frequencies, handles multiple band ranges. Wait the user said to switch all terms
"Device" can become apparatus.
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