Back to the original question, the Logging In manual for the class of 2022 clearly states as far as what to bring in the way of electronics
"Electronic Calculators: A graphics calculator (e.g. TI-30x IIS) is recommended, but optional. This may be purchased before entrance to the Academy or can be purchased at the Academy’s Navy Exchange (NEX).
Cell Phones: Cell phones may be brought but, due to the Indoctrination training program, will not be authorized to remain on person and will be collected and stowed for safekeeping.
ALL OTHER ELECTRONICS (SPEAKERS, RADIOS/STEREOS, IPODS, PORTABLE GAMING DEVICES, ETC.) ARE NOT AUTHORIZED. All items are subject to inspection and any items brought not listed may be confiscated for the duration of the Indoctrination program."