Separate storage, battery health and age with three measurements

short · 30 min · Objective 3.2

Task

Produce the three measurements that separate the causes of a slow phone, and then write the honest conversation: what you can fix, what a battery would fix, and what is simply the device's age. The third one is the part technicians avoid saying and users most need to hear.

Steps

  1. Record the storage breakdown in lab/mobperf/storage.csv with header category,size_gb,safe_to_remove,confirmed_backed_up, covering at least six categories.
  2. Record the battery position in lab/mobperf/battery.csv with header measure,value,source covering level, health or cycle count, age of the device, and whether unexpected shutdowns have occurred.
  3. Record the device's age and the current operating system version against the version it shipped with, in lab/mobperf/age.txt.
  4. Write lab/mobperf/causes.csv with header cause,evidence,fixable,cost covering storage pressure, battery throttling and software expectations.
  5. Write lab/mobperf/conversation.md as the sentences you would actually say to the owner, naming each cause, what it costs to address, and which one will not improve.

Verify

awk -F, 'NR>1 && NF>=4 {n++} END {print n" storage categor(ies)"}' lab/mobperf/storage.csv
awk -F, 'NR>1 && $3 ~ /yes/ && $4 ~ /no/ {n++} END {print n" categor(ies) marked removable but not backed up"}' lab/mobperf/storage.csv
awk -F, 'NR>1 && NF>=3 {n++} END {print n" battery measure(s)"}' lab/mobperf/battery.csv
awk -F, 'NR>1 && NF>=4 {n++} END {print n" cause(s)"}' lab/mobperf/causes.csv
grep -Eic 'will not|cannot improve|age' lab/mobperf/conversation.md

Six storage categories, four battery measures, three causes, and a conversation naming the one that will not improve. Anything marked removable but not confirmed as backed up is a deletion waiting to go wrong, and the count should be zero before you remove anything.

Notes

A battery at seventy-something per cent health in a phone the owner was about to replace is the most valuable finding in this whole domain, and it costs one measurement.

This is an independent study companion for CompTIA A+ Core 2 220-1202 and is not produced by or endorsed by CompTIA.