Beginning in late June or early July 2018, we stopped recording any Edit schema events from either of the mobile editors (see [this notebook](https://github.com/wikimedia-research/2018-08-Editing-metrics-snapshots/blob/b7176cb4958425fadc25639b0880dfa0fd909d7f/data-quality.ipynb) for full analysis).
I ran the following query on 5 September:
```
select
left(timestamp, 6) as month,
sum(event_editor = "wikitext") as wikitext_events,
sum(event_editor = "visualeditor") as visualeditor_events
from log.Edit_17541122
where
event_platform = "phone"
group by left(timestamp, 6)
month wikitext_events visualeditor_events
0 201712 2037604.0 28271.0
1 201801 4341238.0 59143.0
2 201802 3897444.0 53763.0
3 201803 4220510.0 59607.0
4 201804 4084998.0 57519.0
5 201805 4263057.0 49500.0
6 201806 4170920.0 61958.0
7 201807 686.0 16.0
8 201808 68.0 0.0
```
There have been a few recent validation errors, but not nearly enough to account for the roughly 500 000 missing events every month. So it seems like the mobile events are just not getting sent.
```
select
date_format(from_unixtime(timestamp), "YYYY-MM") as month,
count(*) as errors
from event.eventerror
where
year = 2018 and
month >= 5 and
event.schema = "Edit"
group by date_format(from_unixtime(timestamp), "YYYY-MM")
month errors
0 2018-04 3
2 2018-05 5034
3 2018-06 2481
4 2018-07 7251
5 2018-08 3073
```