CREATE TABLE chip_model (model_name TEXT, launch_year DECIMAL, ram_mib DECIMAL, rom_mib DECIMAL, slots TEXT, wifi TEXT, bluetooth TEXT)
CREATE TABLE phone (company_name TEXT, hardware_model_name TEXT, accreditation_type TEXT, accreditation_level TEXT, date TEXT, chip_model TEXT, screen_mode TEXT)
CREATE TABLE screen_mode (graphics_mode DECIMAL, char_cells TEXT, pixels TEXT, hardware_colours DECIMAL, used_kb DECIMAL, map TEXT, type TEXT)

List the name of the phone model launched in year 2002 and with the highest RAM size.
SELECT T2.hardware_model_name FROM chip_model AS T1 JOIN phone AS T2 ON T1.model_name = T2.chip_model WHERE T1.launch_year = 2002 ORDER BY T1.ram_mib DESC LIMIT 1
SELECT "T2"."hardware_model_name" FROM "chip_model" AS "T1" JOIN "phone" AS "T2" ON "T1"."model_name" = "T2"."chip_model" WHERE "T1"."launch_year" = 2002 ORDER BY "T1"."ram_mib" DESC NULLS LAST LIMIT 1