No definition available.

Name:	gtch_CommonStockOwned
Namespace Prefix:	gtch_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Common stock purchase warrants issued.

+ References

No definition available.

+ Details

Name:	gtch_CommonStockPurchaseWarrantsIssued
Namespace Prefix:	gtch_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	gtch_LossOnSaleOfCommonStock
Namespace Prefix:	gtch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

Name:	gtch_MembershipInterest
Namespace Prefix:	gtch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	gtch_NumberOfCommonStockReturned
Namespace Prefix:	gtch_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of restricted Series AAAA Preferred Stock received.

+ References

No definition available.

+ Details

Name:	gtch_NumberOfRestrictedSeriesAaaaPreferredStockReceived
Namespace Prefix:	gtch_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares converted,

+ References

No definition available.

+ Details

Name:	gtch_NumberOfSharesConverted
Namespace Prefix:	gtch_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	gtch_PaymentOfConsideration
Namespace Prefix:	gtch_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	gtch_PromissoryNotePayableDescription
Namespace Prefix:	gtch_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	gtch_WarrantExercisePrice
Namespace Prefix:	gtch_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	gtch_WarrantsDescription
Namespace Prefix:	gtch_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of the required periodic payments applied to principal.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e7018-107765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6935-107765

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_InterestPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockConsiderationReceivedOnTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

+ Details

Name:	us-gaap_SharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	dei_LegalEntityAxis=gtch_AdvangelistsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=gtch_GBTTechnologiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=gtch_MobiquityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=gtch_StockPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=gtch_SalkindTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=gtch_SalkindMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=gtch_KatyalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=gtch_GlenEaglesAcquisitionLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=gtch_SurgeHoldingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=gtch_AssetPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Investment in Mobiquity Technologies, Inc. and Surge Holdings, Inc.; Convertible Note Receivable (Details Narrative) - USD ($)					1 Months Ended		3 Months Ended
	Sep. 10, 2019	Aug. 06, 2019	May 10, 2019	Sep. 04, 2018	Dec. 31, 2019	Nov. 19, 2018	Mar. 31, 2020
Common stock shares authorised					500,000,000		500,000,000
Warrants description		Mobiquity delivered a counter signed letter agreement dated August 2, 2019 pursuant to which the Company exchanged 120,000,000 Mobiquity Warrants into 20,000,000 shares of Mobiquity common stock, which will result in the Company holding 60,000,000 shares of Mobiquity common stock.
Advangelists, LLC [Member]
Membership interest			49.00%
Interest			$ 7,475,000
Promissory Note payable description			Cancellation of an outstanding Promissory Note payable by GEAL to the Company in the amount of $1,200,000 originally issued on March 1, 2019.
GBT Technologies, S.A. [Member]
Payment of consideration							60,000,000
Mobiquity [Member]
Number of restricted Series AAAA Preferred Stock received				1,000
Issuance of common stock				10,000,000		200
Number of shares converted				100,000,000		20,000,000
Common stock purchase warrants issued				150,000,000		30,000,000
Warrant exercise price				$ 0.12		$ 0.12
Term				5 years
Common stock shares authorised				250,000,000
Common stock owned							40,000,000
Mobiquity [Member] \| Stock Purchase Agreement [Member]
Issuance of common stock	110,000
Number of common stock returned	15,000,000
Loss on sale of common stock	$ 3,673,595
Mobiquity [Member] \| Stock Purchase Agreement [Member] \| Salkind Trust [Member]
Sale of common stock	7,000,000
Consideartion from sale of common stock	$ 67,200
Mobiquity [Member] \| Stock Purchase Agreement [Member] \| Salkind [Member]
Sale of common stock	28,000,000
Consideartion from sale of common stock	$ 268,000
Mobiquity [Member] \| Stock Purchase Agreement [Member] \| Katyal [Member]
Issuance of common stock	90,000
Sale of common stock	10,000,000
Glen Eagles Acquisition LP [Member]
Common stock issued for consulting services						20,000
Surge Holdings [Member] \| Asset Purchase Agreement [Member]
Sale of common stock					3,333,333
Consideartion from sale of common stock					$ 5,000,000
Payment of principal					$ 4,000,000