Jaime Calder removes weeds from a blackberry patch in her vegetable garden in Round Rock, Texas, amid the coronavirus disease (COVID-19) spread in the U.S., April 7, 2020. Picture taken April 7, 2020. REUTERS/Sergio Flores

Jaime Calder's blackberry plant is seen in her vegetable garden, as the coronavirus disease (COVID-19) spread continues, in Round Rock, Texas, U.S. April 7, 2020. Picture taken April 7, 2020. REUTERS/Sergio Flores

Jaime Calder checks blackberries in her vegetable garden, as she has been adding to her home garden during the lockdown related to coronavirus disease (COVID-19) spread, in Round Rock, Texas, U.S. April 7, 2020. Picture taken April 7, 2020. REUTERS/Sergio Flores

Ravil Izhmukhametov, 9, holds blackberries outside the village of Sibilyakovo, Omsk region, Russia, September 1, 2019. REUTERS/Alexey Malgavko SEARCH "SIBILYAKOVO MALGAVKO" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Visitors attend the Blackberry booth at the Mobile World Congress in Barcelona, Spain February 25, 2019. REUTERS/Rafael Marchante

Blackberry CEO John Chen stands in front of an autonomous vehicle at the BlackBerry QNX headquarters in Ottawa, Ontario, Canada, February 15, 2019. REUTERS/Chris Wattie

A Velodyne LiDAR sensor is seen on an autonomous vehicle at the BlackBerry QNX headquarters in Ottawa, Ontario, Canada, February 15, 2019. REUTERS/Chris Wattie

An autonomous vehicle is seen at the BlackBerry QNX headquarters in Ottawa, Ontario, Canada, February 15, 2019. REUTERS/Chris Wattie

An autonomous vehicle is seen at the BlackBerry QNX headquarters in Ottawa, Ontario, Canada, February 15, 2019. REUTERS/Chris Wattie

Blackberry CEO John Chen stands in front of an autonomous vehicle at the BlackBerry QNX headquarters in Ottawa, Ontario, Canada, February 15, 2019. REUTERS/Chris Wattie

Blackberry CEO John Chen takes part in an event at the BlackBerry QNX headquarters in Ottawa, Ontario, Canada, February 15, 2019. REUTERS/Chris Wattie

Blackberry CEO John Chen speaks during an event with Canada's Prime Minister Justin Trudeau at the BlackBerry QNX headquarters in Ottawa, Ontario, Canada, February 15, 2019. REUTERS/Chris Wattie

Canada's Prime Minister Justin Trudeau listens to a question during a news conference at the BlackBerry QNX headquarters in Ottawa, Ontario, Canada, February 15, 2019. REUTERS/Chris Wattie

Canada's Prime Minister Justin Trudeau listens to a question during a news conference at the BlackBerry QNX headquarters in Ottawa, Ontario, Canada, February 15, 2019. REUTERS/Chris Wattie

Canada's Prime Minister Justin Trudeau meets with employees during an event at the BlackBerry QNX headquarters in Ottawa, Ontario, Canada, February 15, 2019. REUTERS/Chris Wattie

Canada's Prime Minister Justin Trudeau listens to a question during a news conference at the BlackBerry QNX headquarters in Ottawa, Ontario, Canada, February 15, 2019. REUTERS/Chris Wattie

Karma Revero hybrid electric sports car with Blackberry technology is displayed the 2019 CES in Las Vegas, Nevada, U.S. January 8, 2019. REUTERS/Steve Marcus

John Chen, Executive Chairman and CEO of BlackBerry Ltd, rings the opening bell at the New York Stock Exchange (NYSE) in New York, U.S., October 16, 2018. REUTERS/Brendan McDermid

John Chen, Executive Chairman and CEO of BlackBerry Ltd, walks on the floor at the New York Stock Exchange (NYSE) in New York, U.S., October 16, 2018. REUTERS/Brendan McDermid

John Chen, Executive Chairman and CEO of BlackBerry Ltd, rings the opening bell at the New York Stock Exchange (NYSE) in New York, U.S., October 16, 2018. REUTERS/Brendan McDermid

John Chen, Executive Chairman and CEO of BlackBerry Ltd, walks on the floor at the New York Stock Exchange (NYSE) in New York, U.S., October 16, 2018. REUTERS/Brendan McDermid

Alexya Salvador (L), an evangelical Christian transgender pastor and candidate for Sao Paulo state congress, her husband Roberto and their son Gabriel pick blackberries from a tree in front their home in Sao Paulo, Brazil September 11, 2018. Picture taken September 11, 2018. REUTERS/Paulo Whitaker

Alexya Salvador (L), an evangelical Christian transgender pastor and candidate for Sao Paulo state congress, and her daughter transgender Ana Maria pick blackberries from a tree in front their home in Sao Paulo, Brazil September 11, 2018. Picture taken September 11, 2018. REUTERS/Paulo Whitaker

The new BlackBerry Key2 smartphone is displayed at a product launch event for the device in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

The new BlackBerry Key2 smartphone is displayed at a product launch event for the device in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

The new BlackBerry Key2 smartphone is displayed at a product launch event for the device in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

The new BlackBerry Key2 smartphone is seen at a product launch event for the device in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

The new BlackBerry Key2 smartphone is seen at a product launch event for the device in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

Alain LeJeune, President of Blackberry Mobile at TCL Communication speaks at the introduction the new Blackberry Key2 smartphone during a product launch event for the device in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

Alain LeJeune, President of Blackberry Mobile at TCL Communication speaks at the introduction the new Blackberry Key2 smartphone during a product launch event for the device in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

Gareth Hurn, Global Head of Device Portfolio for BlackBerry Mobile at TCL Communication introduces the new BlackBerry Key2 smartphone during a product launch event in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

Gareth Hurn, Global Head of Device Portfolio for BlackBerry Mobile at TCL Communication introduces the new BlackBerry Key2 smartphone during a product launch event in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

Gareth Hurn, Global Head of Device Portfolio for Blackberry Mobile at TCL Communication introduces the new BlackBerry Key2 smartphone during a product launch event in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

Gareth Hurn, Global Head of Device Portfolio for Blackberry Mobile at TCL Communication introduces the new Blackberry Key2 smartphone during a product launch event in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

Gareth Hurn, Global Head of Device Portfolio for Blackberry Mobile at TCL Communication introduces the new Blackberry Key2 smartphone during a product launch event in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

Gareth Hurn, Global Head of Device Portfolio for Blackberry Mobile at TCL Communication introduces the new Blackberry Key2 smartphone during a product launch event in Manhattan in New York, U.S., June 7, 2018. REUTERS/Mike Segar

A computer displays the Blackberry Unified Endpoint Management program at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

A computer displays "Blackberry Workspaces" at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

A sign is displayed on the building Blackberry's offices in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

A computer displays "Blackberry Workspaces" at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

A computer displays Blackberry Radar at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

An employee works at his desk at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

Employees work at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

An employee works at his desk at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

An employee demonstrates a tablet as a client that uses the Blackberry Unified Endpoint Management program at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

Employees work at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

An employee works at his desk at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

An employee works at his desk at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

An employee works at his desk at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

An employee works at his desk at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

An employee works at his desk at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

An employee works at his desk at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

An employee works at his desk at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

An employee works at his desk at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

A sign stands at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

A sign stands at Blackberry's Network Operating Centre (NOC) in Waterloo, Ontario, Canada, May 29, 2018. REUTERS/Mark Blinch

A BlackBerry logo is seen during the Mobile World Congress in Barcelona, Spain February 28, 2018. REUTERS/Yves Herman

Blackberry CEO John Chen speaks at the North American International Auto Show in Detroit, Michigan, U.S., January 15, 2018. REUTERS/Rebecca Cook

Canadian Minister of Innovation Science and Economic Development, Navdeep Bains, introduces Blackberry CEO John Chen (not pictured) at the North American International Auto Show in Detroit, Michigan, U.S., January 15, 2018. REUTERS/Rebecca Cook

John Chen, CEO of BlackBerry, gives an interview with CNBC following the opening of his company's stock at the New York Stock Exchange (NYSE) in New York, U.S., October 16, 2017. REUTERS/Brendan McDermid