Wifi will use less power, by a lot in my experience. Particularly if you have a good wifi signal. On the other hand, in an area with a weak cell signal I have seen my phone drained in less than an hour while struggling to get a signal. Here's one article on the subject:
https://www.pcmag.com/how-to/9-tips-...s-battery-life
Quote:
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Network data is strenuous on your battery, so use Wi-Fi whenever possible.
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