Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 24, 2021	Jun. 30, 2020
Document And Entity Information
Entity Registrant Name	GBT Technologies Inc.
Entity Central Index Key	0001471781
Document Type	10-K
Document Period End Date	Dec. 31, 2020
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity a Well-known Seasoned Issuer	No
Entity a Voluntary Filer	No
Entity's Reporting Status Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Shell Company	false
Entity File Number	000-54530
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	NV
Entity Public Float			$ 1,157,141
Entity Common Stock, Shares Outstanding		493,110,305
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
ICFR Auditor Attestation Flag	false