From what I have read, there are a few common denominators among users experiencing this type of problem. Every user’s scenario is different. Most fall into one of these scenarios.
Number one on the list of problems is leaving the GPS active while the camera is turned off. The GPS can be always ON, always OFF, or somewhere in between. It should turn off when the camera turns off, which is the mode where users are experiencing lock up issues.
Bad memory cards seems to be another common symptom. People are buying the largest memory cards they can find on Amazon, or not formatting their cards prior to first use.
Using third party RF-EF mount adapters is another common source of problems. These are often accompanied by dead or drained batteries when the camera is turned OFF.
Of course, there is always the bad camera out of the box. Personally, I think the issues have been blown way out of proportion by a very small percentage of users.
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