The window behind the drivers cab has been lowered so children can get a better view of the operator of the cars.

This information is also communicated to a smart phone application, allowing customers to choose in which car to ride based on their temperature preference.

[7] Set number 01 entered revenue service on 30 November 2015, with a departure ceremony at Osaki Station, but was taken out of service later the same day following faults with door-close indicators and problems stopping at the correct position along the station platform.

[9] The train returned to revenue service on the Yamanote Line on 7 March 2016.

[11] The first full-production standard set, 02, was delivered from the J-TREC factory in Niigata in April 2017.

The pre-series set (01) was converted to the full production standard by 14 March 2018.

[20] Between October and December 2022, set 15 was repainted into an all-over black livery to commemorate the 150th anniversary of the opening of the first railway in Japan.

[21] The E235-1000 series fleet will consist of a total of 745 cars (consisting of 51 11-car trains and 46 four-car trains) for use on the Sōbu Line (Rapid) and Yokosuka Line, replacing the E217 series in use since 1994.

[15] On 21 April 2020, the Green cars of the first set were completed at the J-TREC factory in Kanazawa-ku, Yokohama and transported to the J-TREC factory in Niigata to be joined with standard cars.

[22][better source needed] As with their counterparts on the Yamanote Line, passenger accommodation for ordinary cars consists of longitudinal bench seating throughout.

[29] Green car accommodation consists of reclining, 2+2 abreast seating throughout.